www.sysinternals.com

These folks have always provided some great, useful, powerful, and best of all – FREE – tools for IT Pros and Windows administration. 

Now they’re helping even more in the area of security and, in particular, the detection of hidden malicious software known as a Root Kit.

Check out their new RootKitRevealer, for a good description of what a Root Kit is, and to download the Revealer tools.