http://www.spybot.info/en/index.html That is the direct addy for Spybot Search and Destroy, a very good spyware detector/remover.
Here's the definition of a keylogger from Spybot's
http://www.safer-networking.org's dictionary (safer-networking is their home/forum).
Quote:
Keylogger [link]
The name keylogger was defined back in old DOS times, where computers where handled just by using a keyboard. The most basic keyloggers back from that time just log the keys you press. The spy, a person with physical access to your machine, could get that log at a later point and see everything you typed.
Modern keyloggers are much improved. They do not only log the keys you press, but make also screenshots to show the spy what Windows you are working with, the capture information about your internet use, and much more. The spy doesn't even need physical access to your machine because many current keyloggers send their logs by mail.
If you don't have anti-virus (which you should definitely!), at least get this smaller free stand alone. It won't catch everything, but I have it and run it as just an extra. This will be updated, but you have to d/l the new version. So bookmark the page and check it from time to time for new versions.
http://vil.nai.com/vil/stinger/ This page is in the McAfee site, so it is safe.