Comodo Programs Manager
Comodo has released a free, handy tool called Comodo Programs Manager that offers some unique functions to keep your computer in good shape.
It can be used to completely remove failed and partially uninstalled programs, unwanted driver files, locked (in use) files, registry entries, Windows components like MSN Messenger, Windows updates, services, etc.

Most often many people find it difficult to uninstall antivirus programs properly from their PC. I think this is especially true with latest operating system Windows 7.