If the techs cant help the only other way I know is manually uninstall it though the registry using REGEDIT,
First you need to back up the registry just in case, info below
http://support.microsoft.com/kb/322756
Next you will need to delete the PC GUARD folder from the programs folder on the C drive, you may have to do this in safe mode by pressing F8 at the boot sreen, to get into safe mode,info below
http://www.pchell.com/support/safemode.shtml
Now restart you system, go to start, run and type REGEDIT, go to edit, then find and type PC Guard, click find next, when it finds an entrie, right click on it and select delete, now press F3 untill it does not find anymore entries of pc guard, info below
http://www.theeldergeek.com/manually...l_programs.htm
Restart and see how that is, I have used this a number of times when software refused to uninstall with add and remove programs, it has it risks as if you delete a wrong key, you will knacker your system anyway, and mite have reinstall xp (thats way you back uo the registry 1st), this may save you having to reinstall xp, but not rush into it have a good read of the links first.
some info on good AV's and security tools.
http://forums.techguy.org/security/1...elp-tools.html