From Babbage Technologies:
BTQuickClean allows you to quickly clean up files on another hard drive that may be infected with viruses / malware. You can connect a drive from another computer using USB / PATA / SATA connections and do the following:
Delete temporary files from all user profiles with the click of one button.
Manage the registry startup items.
Check for recently modified system files.
View available disk space.
View antivirus detected on drive.
Perform system restore. (Currently supported only with drives running Windows XP)
Backup user profile data.
BTQuickClean is a great tool that allows computer repair shops to save significant time with mundane tasks.