Computer Virus!!!?

ok so i got a virus on my comp, and for some reason, my antivirus COULDN'T detect it. I have Norton Antivirus 2003, and it has an auto-protect feature (which the virus got past) and the virus went even further by actually disabling my antivirus software auto-protect and what-not (pretty ironic). Can anyone tell me how I can get this thing out of my computer?!?!?!

Computer Virus!!!?hijackthis

Securing a Personal Machine

http://safecomputing.umn.edu/studentchec...

OS Reinstallation vs. Virus Removal

http://safecomputing.umn.edu/guides/rebu...

If you follow all the following steps it should get rid of your problem and prevent future problems. All programs listed are free.

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Update your Full Time (Active) antivirus and run a full scan.

If you do not have active virus protection, install only one. All are excellent.

Try AVG first.

AVG Antivirus 7.5 Free Edition

http://free.grisoft.com/freeweb.php/doc/...

http://www.download.com/AVG-Anti-Virus-F...

or

Free antivirus - avast! 4 Home Edition

http://www.avast.com/eng/avast_4_home.ht...

or

AOL Active Virus Shield (powered by Kaspersky)

http://www.activevirusshield.com/antivir...

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Update your Full Time (Active) spyware protection and run a full scan. If you do not have active spyware protection, install one of the following. Start with Windows Defender.