Even if your PC has Ad-aware and Spybot Search & Destroy, you still can't stop some versions of an insidious and virus-like pest called CoolWebSearch. Fortunately, a Dutch student who goes simply by the name Merijn wrote a tiny free tool called CWShredder that specializes in removing dozens of CWS variants. InterMute bought the program and now maintains it as a standalone download and bundled with SpySubtract Pro. The following link downloads the standalone version of CWShredder.
Though other apps provide more-expansive security, DropMyRights gives you simple yet effective protection against malware by limiting user rights-and it works with any program.