Help Me!

dore_mon

This Trojan named Trojan.dropper.delf.AWT has infected into my computer.My PC uses Windows XP .I used bitdefender total security 2008 to disinfect this trojan but it did not work.My bitdefender just detected this trojan without destroying it.This trojan infected into the file C:\windows\system32\taskmg.exe .By the time it infected into my computer,my computer was in the error "blue screen of death" .I don't know if this trojan caused that error.

Therefore i need someone to help me solve this trouble.Thanks alot!