I wouldn't be surprised to discover that the other anti-virus people also offer that service to subscribers. Geo, Scott L and others could probably suggest sites which will scan non-subsribers.

Incredibly some people are actually using two anti-virus programs! (Along with their firewall. spyware searchers and even anti-spam stuff. I find the latter in need of work yet.)

If you want to test drive another anti-virus application, you could download a shareware (trial) version at http://www.pandasoftware.com/download/
See also
http://www.thefreesite.com/Free_Software/

More and more their updates are automatic. All of us need to be militant in making sure the upgrades were loaded. Also set your MS Windows updates to automatic. And check to see that these things got done... (in your spare time - heh-heh).

Then please give us your list here. That'll make it a lot easier on those of us who haven't offered suggestions yet. :)