We highly reccommend that you use Norton Antivirus 2005 edition which not only protects you from viruses but also spyware. We now do PC servicing so you can also drop your PC off and we can do what we can to remove the virus and any spyware. You can also at that time purchase a copy of Norton Antivirus and we will install it for you.
If you would like to try to fix it yourself here are a number of free online virus scans.