After posting about how to remove a rootkit using SystemRescueCd, I encountered a rootkit that I could not eradicate using my method. Fortunately, I was able to discover a different method using Windows tools. SysInternals (aka Microsoft) developed a tool called RootkitRevealer that is very useful in determining the symptoms, thus the identity, of a rootkit. After determining the identity of the rootkit and its associated files, I was able to use The Avenger to remove the offending files/drivers. Please visit these websites to learn more about them and their ability to remove malware.
Additionally, here is a great site that educates on rootkits: http://www.raulsiles.com/resources/rootkit.html