Since I was running 2 anti-virus on my Windows Vista, I wanted to remove one. The Windows Uninstall Programs Control Panel applet was unable to uninstall it. I tried everything, but the uninstall did not proceed beyond a point and the process then had to roll back.
While there are are several stand-alone antivirus removal tools & uninstallers, I decided try AppRemover, since the one for my security application too did not work! I must say that AppRemover did the job effortlessly!

AppRemover is a free utility that enables users to remove anti-virus, anti-spyware, firewall and other security applications, as well as left over files from incomplete un-installations.
There is thus no more a need to mess around with your registry. You can simply run this program and it will do its job.
You can use AppRemover to Remove a Complete Security Application or to to Clean Up a Failed Uninstall.
The program is a single, standalone, and portable file; it can be run from a USB stick.
It can remove products made by Avast!, AVG, Avira, BullGuard, CA, ClamWin, ESET, F-Secure, Kaspersky, Lavasoft, McAfee, Microsoft, Norman, Panda, Sophos, Symantec, TrendMicro, TrustPort, Webroot and many more. To see the entire list click here.
Works just fine on Windows Vista & Windows 7, 32-bit & 64-bit computers too.
Visit AppRemover HomePage.
Official individual antivirus removal tools and AntiVirus Uninstaller Tools Pack will also definitely interest you!
If you have liked this post, you might want to check out some more, on topics like Anti-malware, AntiVirus, Firewall, Uninstall.