I have a similar problem to many others on this board. MSE detected Trojan Win32 Sirefef, (A, B I think, although there could've been others). It quarantined and tried to remove them but they kept returning and then I got stuck in the critical error / 1 minute restart issue. I am using Vista 32-bit. My head boggles with the tons of instructions given here - tried to get into System Recovery Options but got stuck at Command Prompt when I entered the drive where I stored FRST. I ran pc in Safe Mode, Safe Mode with network, etc etc but no luck. Due to this, I couldn't follow the 5 step malware removal process. I'd appreciate any help in resolving this.