How to clean "trojan horse" virus?

and also i have updated norton antivirus 2005 is it trustable?

and also my pc is performing very poor since i uploaded norton antivirus 2005 . i also have my offiscan main running in the sidebar so does that mean i'm using both the antivirus softwares simultanouesly? pls help me improve th eperformance of my pc.

How to clean "trojan horse" virus?virus scan

Get a free PC safety scan

Windows Live OneCare safety scanner is a free service designed to help ensure the health of your PC.

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Tune Up Center

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Like a car, your PC needs regular maintenance to help keep it in tip-top shape.

Other helpful information

How did I get infected?, With steps so it does not happen again!

http://www.bleepingcomputer.com/forums/t...

What is Spyware?

Understanding Spyware, Browser Hijackers, and Dialers.

http://www.bleepingcomputer.com/tutorial...

How to clean "trojan horse" virus?anti virus scan