The error you get trying to install the Windows patch could just be due to some random suckiness of Windows and not the virus. Who knows. Did you try on the Symantec site, doing the manual removal? Going through step 1 to 5, starting with <b>1. Disabling System Restore (Windows XP)</b>. Especially the part where you edit your registry. Maybe running the tools already did delete all the files that were infected on your computer, or something. Just try all the steps (probably skipping step 2) and see if anything changes.