This virus has become more devious.
I had this CW infection that kept coming back after you would think you had deleted it. CW shredder was useless. So was SPYBOT, Hijackthis and Adware and Microsoft AntiSpyware. It was a vicious circle.
I finally, after figuring out what processes were causing the return, got hold of X-raypc. Cool program, free and small. It gives you info on all running processes and lets you off load them and/or delete the file causing the running process. Careful what you delete!
Check it out:
http://www.x-raypc.com/
I wonder why CWShredder worked for me. Other variations of Cool Web Search much more devastating?
I got a variant of CWS that behaved nasty as well. It put a key in the registry that was delete protected. Nothing could touch it buyt manual intervention..