Virus Scanners are no longer difficult to install, tedious to configure. There are easy to use Online Virus Scanners, which offer to scan your hard disks whilst you surf the Internet.
Check out the following:- FSecure Virus Scanner: http://support.f-secure.com/enu/home/ols.shtml
- Trend Micro Housecall: http://housecall.antivirus.com/
Keep your system protected against spreading viruses...