Pop-Up Problems from Quantserve.com

Hello Everyone and thanks for your help in advance.  I have a Windows XP Pro Workstation that appears to have some type of infection.  I am getting pop-up screens that appear to be from xxxx://edge.quantserve.com.  I have updated virus definitions and have performed several scans, yet nothing is detected.  The computer also seems to be running very slowly and the task manager shows high CPU usage, sometimes as high as 100%.  I’m not exactly sure where to look for the problem, but obviously, I have some type of malware.  Any help on this topic would be greatly appreciated.

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Message Edited by Dave_Coleman on 04-14-2009 12:22 PM