It can also hijack your hosts file.
I suggest to review your hosts file if any antivirus website is blocked or just reset it. Download the file at http://support.microsoft.com/kb/972034 to reset the hosts file.
Example of host file:
127.0.0.1 sample domain name here or sample website name here.
If the hosts file is not hijacked or modified, you might want to use another download site to see if it'll work. Example: filehippo.com, majorgeeks.com
If you can't get the antivirus software to download, I suggest to use another clean PC in downloading the scanner and removal tools below:
a-squared Emergency USB Stick from http://download1.emsisoft.com/a2usb.zip
Save it in your desktop or USB stick then extract the content to the USB stick (in the root directory of your USB stick, not in any folder). Proceed by running a2Free.exe from the USB stick
More info http://www.emsisoft.com/en/software/stick/
Malwarebytes Antimalware (MBAM) http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html
You can also download it from http://www.gt500.org/malwarebytes/mbam.jsp
I had my laptop wiped and I cant seem to download any anti virus software. I can not gain access to anti virus websites and if I download through download.com the installations stop because they "cannot connect to server" am I right to assume its a virus causing this?
All websites other than anti virus sites work fine. Im running windows xp. Thanks