I use Bitdefender but it can't clean or delete the Worm.P2P.Agent.Q..
Win32.Agent.pz is a malicious trojan threat created to infiltrate Windows system, open a security holes, download further malware and create large numbers of pop up advertisements on your computer. The Win32.Agent.pz may appear after clicking on undesirable spam e-mail links or downloading corrupt shareware and p2p downloads. Win32.Agent.pz may initiate crucial harm to your computer security and privacy.
There's a spyware and virus removal named Anti-VIrus Plus.. Maybe I'll try this..
Okay.. I just try tips from whoismadhur.com .. It works//