I found THIS ,but i'm not familiar with this site.
I am running a Windows XP machine with Microsoft Defender -- which gave me a clean bill of health. However, I decided to try the trial version of Anonymizer Anti-Spyware, and it detected 5 spyware installations, including Advanced Computer Monitor (ACM) - a stealth keylogging program which must be physically installed on your machine.
ACM is marketed for legitimate purposes (e.g. parental or workplace supervision), hence it is given a "pass" by many anti-spyware programs. HOWEVER some unknown person seems to have gained access to my machine and installed it.
I want to warn against this potential danger, and to ask of any other anti-spyware programs (besides Anonymizer) that will diagnose and remove it. TKS