Stinger is a stand-alone utility used to detect and remove specific viruses. It is not a substitute for full anti-virus protection, but rather a tool to assist administrators and users when dealing with an infected system. Stinger utilizes next generation scan engine technology, including process scanning, digitally signed DAT files, and scan performance optimizations.
How do I use Stinger?
Download Stinger.exe v1.7.1 [669,191 bytes] (6/5/2003)
This version of Stinger includes detection for all known variants of W32/Fizzer@MM, W32/Lovgate@M, BackDoor-AQJ, W32/SQLSlammer, W32/Lirva, W32/Yaha@MM, W32/Bugbear@MM, W32/Elkern, W32/Klez, W32/Nimda@MM, W32/Sircam@MM, and W32/Funlove@MM

http://vil.nai.com/vil/stinger/