How do I remove windows antivirus pop-ups.

Those software in fact are NOT anti-viruses, they a rouge software posing as genuine anti-virus products in order to force you to buy the full package. They are malware and should be removed.

To remove them, simply try uninstalling them as you would as other programs.

If they re-appear after you restarted follow the guide on the link below for the maunall removal instructions.

For 2008: http://www.2-spyware.com/remove-windows-antivirus-...

For 2009: http://www.2-spyware.com/remove-antivirus-2009.htm...

After you have succesfully un-installed them, i recommend downloading the latest free anti-virus (if you don't have one already) AVG 8.0 here: http://free.avg.com/ww.download?prd=afe

How to remove XP Antivirus 2008, XP Antivirus 2009, and XPAntiVirus (Removal Instructions

http://www.bleepingcomputer.com/malware-removal/re...

You have to get rid of the Windows Antivirus 2008 files and registry entries. Smitfraudfix will delete them for you if you boot into safe mode. Follow the steps on the removal process here http://www.pchubs.com/blogs/windows-antivirus-2008...

http://uk.answers.yahoo.com/question/index;_ylt=Au...