Slow Comp Troubles >.<

Ok so heres the deal. I have windows XP and I noticed that my comp has been working extremely slow the last couple of weeks. By looking at task manager I noticed that comp usage is always at 100%. I ran many spy/adware programs and got rid of all that stuff. I also use some virus soft ware which got rid of the many trojans I had. But still comp isnt running any faster. It is still always at 100% usage. It seems even slower when trying to log on now. Im also getting error messages like... Cannot run C:WINDOWS/System32/bridge.dll. I have a ATI Radeon graphics card if that has anything to do with it. Any ideas of what I have or what I should do?

 

C:WINDOWS/System32/bridge.dll is spyware recommend going here
http://www.trendmicro.com/vinfo/grayware/graywareDetails.asp?SNAME=SPYW_BRISS.A
Then do a on line virus scan.Follow directions
http://housecall.trendmicro.com/

 

I also have been getting errors sucuh as "Windows cannot open this file: File:chhcc. And error loading NvQTwk. any ideas of what those are and how to fix them?

 

NvQTwk is a part of the software for your Nvidia graphics card, try reinstalling the driver that came with the card, or visit Nvidia's web site and download the latest driver.
Hope this helps.