What is a computer virus?
How do I prevent my computer
from being infected by a virus?
do I do if a virus is found in my computer?
do I go to get the latest DAT files for my anti-virus
How do I update my computer's
Windows operating system?
How do I Use Scan Disk for Windows
95 to scan my hard drive?
How do I Use Disk Cleanup
for Windows 98 to scan My hard drive?
How do I defragment my hard
is CALIS' Dial Broadband?
Does CALIS offer Web
content filtering service?
is Multilink PPP?
How do I publish my Web page
on the Internet?
do I need for Multilink PPP?
kind of speed can I expect with Multilink PPP?
much does Multilink PPP cost?
if I still have questions related to Multilink
How do I add pictures of
items I am selling on eBay?
How do I sign up for CALIS services?
Sign up online at one of our secure sites at http://www.calis.com/reg.html,
or call our toll free number 866.GO.CALIS (866.462.2547).
What is my local access phone number?
A local access phone number is a local phone number
we provide in your local calling area that you would use to
dial-up to CALIS. To find out what your local access
phone number is click
Please verify that your dial-up number is a local telephone
call. You can verify this information by contacting your local
What are CALIS domain names and IP addresses?
|POP (Incoming) Mail Server
|SMTP (Outgoing) Mail Server
|PRIMARY DNS/Name Server
|PRIMARY Host Name
|SECONDARY DNS/Name Server
|SECONDARY Host Name
What are the CALIS technical support
Our technicians are available:
8 am – 5 pm
You can also send e-mail: email@example.com
and visit our Web site: www.calis.com.
What is a Computer Virus?
computer virus is a program that spreads itself by infecting
files. When it runs, a virus will essentially wrap a file's
data in its own code. When the file is opened, the virus runs
its program first and then opens the file as initially requested.
Some computer viruses are malicious, erasing files or locking
up systems; others merely present a problem solely through
the act of infecting other code. Standard viruses will spread
only when an infected file is transferred from one computer
Computer worms are self-propagating and can not be
considered ordinary viruses. Worms, unlike other viruses,
don't infect files, but entire disks or computer systems.
Because worms can't rely on file-to-file transfers to spread
their code, they need to have a way of sending themselves
to other computer systems and the most common way is via e-mail.
Known as mass mailers due to the technique of spamming themselves
to every address in the e-mail address book, such worms generally
require a person's action to spread.
In either case, computer virus infections should not go untreated.
Viruses come in many shapes and sizes, such as:
These viruses attach themselves to regular programs, such
as .COM or .EXE files under DOS. Thus, they are invoked each
time the infected program is run.
They modify the file system so that they are run prior to
other programs. Note that, unlike file infectors, they do
not actually attach themselves to programs.
Word processing documents can serve as sources of transmission
for viruses that take advantage of the auto-execution macro
capabilities in products such as Microsoft Word. Simply by
opening an infected document, the virus, written in a product's
macro language, can spread.
Computer operating systems typically set aside a portion of
each disk for code to boot the computer. Under DOS, this section
is called a boot sector on floppies or a master boot record
(MBR) for hard disks. System infectors store themselves in
this area and hence are invoked whenever the disk is used
to boot the system.
How do I prevent my computer from being infected by a virus?
| Follow the virus detection and prevention tips
listed below to lower the chances of your computer being infected
by a virus:
1. Do not open any files attached to an e-mail from an
unknown, suspicious or untrustworthy source. This applies
to e-mail attachments sent by someone you know, unless
you are aware of the contents of the attached file. Some
viruses can replicate themselves and spread through e-mail.
2. Do not forward or reply to any to chain e-mails and
junk e-mail. These types of e-mail are considered spam,
which is unsolicited and intrusive.
3. Make sure that you have one of the anti-virus programs
such as McAfee (www.mcafee.com)
or Norton (www.norton.com)
or AVG (www.grisoft.com)
on your computer.
4. If you do not have any of the anti-virus programs,
you may scan
your computer (online) for any viruses for free.
5. When downloading files from the Internet, verify that
an anti-virus program checks the files on the download
site. If you're uncertain, don't download the file at
6. Update your anti-virus software regularly so that
it is capable of detecting latest viruses discovered.
To update your anti-virus software now, click
7. Update your Windows regularly to make sure that you
have the critical and most updated files and programs
for your system. This enhances the virus detection capability
and makes virus prevention easier. To do windows update
now, click here.
8. Back up your files on a regular basis. If a virus destroys
your files, at least you can replace them with your back-up
copy. You should store your backup copy in a separate location
from your work files, one that is preferably not on your computer
(e.g floppy disk).
What do I do if a virus is found in my computer?
| If your computer has detected a virus, get the
name of the virus and search for information on how to remove
- If you have a McAfee anti-virus program, click here.
- If you have a Norton anti-virus program, click here.
- If you have an AVG anti-virus program, go to here.
Where do I go to get the latest updates for my anti-virus
| - If you are a McAfee user, click here.
- If you are a Norton user, click here.
- If you are an AVG user, click here.
How do I update my computer's Windows operating system?
you are using a PC with Microsoft Windows 95/98/ME/XP/NT/2000,
you may follow the instructions below for fixes, updates and
enhancements to Windows and other programs that work with
1. Go to Start -> Windows Update or www.windowsupdate.microsoft.com.
2. Click on PRODUCT UPDATES link. If a "Security Warning"
dialog box pops up on the screen, click on "Yes"
Windows Update scans your system to see what you have installed
and gives you a list of suggested components. This scan is
done on your computer to ensure the safety and privacy of
your system information. This system check assures that you
will get the most up-to-date and accurate versions of anything
you choose to download from the site. Additionally, you won't
waste time downloading components you have already installed.
3. When the list of components appears on the page, you
can browse it, decide which components you want, and download
them right to your computer. When you decide you want
a certain component, click the box next to it. A check
mark appears in the box (If you decide you don't want
a product you've already selected, just click the box
again to remove the check mark). Before you choose to
download a component, "Read this first" link
for important information.
Note: Be sure to download any critical updates recommended
for your system. Critical updates will fix known problems
(such as security issues) specific to your computer.
4. When you have selected all the components you want, click
the "Download" button.
5. Click the "Start Download" button. All the components
you selected will be downloaded, then installed. This process
may take a while depending on the size of the file and your
connection speed. When you see the "Installation Complete"
message, you're done! Some components may require you to shut
down and restart your computer after installation of all components
Important: You should do the Windows updates every
so often to keep your system updated.
How do I use Scan Disk for Windows 95 to scan my hard drive?
For instructions, click here.
How do I use Disk Cleanup for Windows 98
to scan my hard drive for errors?
| For instructions, click
How do I defragment my hard drive?
| For instructions, click
What is CALIS' Dial Broadband?
| CALIS' exciting new Dial Broadband service offers
you a low-cost, easy solution for immediately enhancing your
dial-up experience. Dial Broadband intelligently determines
the fastest and most efficient way to deliver Web content, more
than doubling the speed of your dial-up connection! Dial Broadband
bridges the gap between traditional dial-up access and broadband
access technologies, such as DSL, cable and wireless. Unlike
these technologies, Dial Broadband is comparable in price to
traditional dial-up access, available in all areas that dial-up
is available, and requires no additional end-user software or
equipment. Click here to
Does CALIS offer Web content filtering service?
content filtering is an optional service CALIS offers to you
if you want your Internet access to be filtered of offensive
Web sites. This service was implemented in response to the
growing concern about the amount of inappropriate content
freely available on the World Wide Web. It is designed to
help families and individuals who do not wish to be subjected
to this content by filtering out the Web pages that directly
contain the unwanted contents like porn, violence, gambling,
hate and drugs. The service is controlled by a special setting
within your Web browsing software (Netscape or Internet Explorer).
If you would like to subscribe to this service, please e-mail
our support staff at firstname.lastname@example.org
or call our office at 1.800.953.9525 during our regular business
hours. One of our technicians will be able to take you through
the set-up process required within your Web browser and will
be able to explain how the filter works. To set up your computer
for Web content filtering, click
here for instructions. This service will not in any way
affect other services CALIS provides to you, such as e-mail
or FTP, and again, only those customers who contact us and
request this filtering service will be billed the additional
charges. For existing CALIS customer to sign up click
Disclaimer: Because the Internet is constantly changing,
CAL Internet Services can not guarantee to block 100% of offensive
content. However, if you notify CALIS of any offensive content
that is not blocked, we will be happy to consider blocking
the offensive site.
How to filter Internet Content through Microsoft
protect your family and children from pornography, alcohol
and tobacco sites on the Web or if you are concerned about
what your employees can access on the Internet, you can filter
One alternative is through the Internet Explorer Internet
Content. Microsoft Internet Explorer supports a ratings standard
ratified by the World Wide Web Consortium called PICS. You
can control access to online material using any PICS-based
Internet ratings system. Internet Explorer includes a built-in
ratings system called RSACi that lets you choose different
levels of allowable language, nudity, sex, and violence. Parents
or managers can also set passwords to allow access to any
Web site. Plus, they can block viewers from accessing Web
sites that aren't rated. Microsoft
Also, you can use a filtering software such as Surf Watch:
or Net Nanny: http://www.netnanny.com
How do I remove the pop up ad windows from my computer?
need to download and install the Ad-aware software to remove
spyware (responsible for pop up ad windows) from your computer.
Click here to find
more information about this software.
What is Multilink PPP?
you are too far from the telephone company central office
to qualify for DSL or if DSL is not available in your area,
Multilink PPP is a viable option. Multilink PPP enables your
computer to use two or more communications ports as if they
were a single port of greater bandwidth. This means that if
you use two modems to connect to the Internet, you can connect
at double the speed of a single modem. Multilink PPP is now
supported by Windows 95, 98 and NT 4.0
What do I need for Multilink PPP?
| 1. An operating system that supports Multilink
- Windows NT supports Multilink PPP with a
maximum of 4 modems. Service Pack 3 should be installed
for better performance.
- Windows 98 supports Multilink PPP with a maximum of 4 modems.
The dial-up metworking security upgrade should be installed
for better performance.
- Windows 95 will support Multilink PPP with a maximum of
2 modems if the dial-up metworking 1.3 upgrade is installed.
2. Two or more phone lines.
3. CAL Internet Services Multilink PPP service.
What kind of speed can I expect with Multilink PPP?
| Tests with Multilink PPP have been very promising.
A speed improvement is definitely noticed. The speed achieved
is equal to the number of modems times the speed of the slowest
connection. For example, if Multilink PPP is used with two modems
connected at 44k and 41.3k, then the achieved speed would be
equivalent to 2 * 41.3k = 82.6k (faster than a single channel
How much does Multilink PPP cost?
will need a dial-up account for each concurrent connection.
CAL Internet Services is offering a dual
line connection. There are no extra set up fees to enable
What if I still have questions related to Multilink PPP?
| If you have any questions, please give us a call
at 1.800.953.9525 or e-mail email@example.com.
How do I publish my Web page on the Internet?
instructions, click here.
How do I add pictures of items I am selling on eBay?
instructions, click here.