been infected by xp anti vitus pro 2010, but clam could not detect it. i used stopzilla to block it but its still there. does anyone know how to remove it? or can the data base be updated to include it?

Malwarebytes' Antimalware program at https://www.malwarebytes.org/index.php on the web does a very good job of removing most malware if it gets on your machine. The free version is just as good as the paid version at this.

Regards,

Always gotten rid of it with Spybot S&D and Combofix. Run both in safemode, combofix first then spybot. Never failed to remove it.