If I need to scan someone's Microsoft Windows system for malware, I usually make a backup of the system outside of Windows, e.g., by booting the system with a Norton Ghost 2003 boot CD and backing up the system to an external USB drive. I then usually perform an initial scan of the system using a rescue CD, such as the F-Secure Rescue CD 3.11. Using a rescue CD can be especially helpful if a system won't boot into Windows or runs abysmally slow because of a malware infection.
In this instance I used the F-Secure Rescue CD 3.11 on a Compaq Presario SR1900NX system running WIndows XP to perform an initial malware scan of the system.
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