Use FREE & FREEWARE software
ThreatExpert Memory Scanner
ThreatExpert Memory Scanner provides a "post-mortem" diagnostic to detect a range of high-profile threats that may be active in different regions of a computer's memory. This tool is designed to assist in answering a common question asked by many customers whose systems have been infected by a threat: "Is my system still infected?"
It's size 1,481 KB and run under windows 2000/XP/Vista
Download Link: www.threatexpert.com/memoryscanner.aspx