RootQuest

From Comsentry.com:

Rootkits can be able hidden on computers and remain undetected by anti-virus software,by using our freeware will finds and removes any rootkit that is hidden on your computer using advanced rootkit detection systems.RootQuest is a good solution to detection and remove all rootkit that currenlty running as background services on computer system.Designed whit most compatible operating system,the program will do monitoring system proccess and remove all rootkit component whit fast and secure.A great tool for finding rootkits it also can prevent the installation and infection of many rootkits.The problem with rootkits is the fact that they can take over a computer and download and install other software,by whit using our rootkit detection technology there will no more a rootkit that currently running on processes.