Returnil Virtual System Premium Edition was available as a giveaway on December 30, 2008!
The Returnil Virtual System Premium Edition provides an altogether different and highly complimentary level of defense. It is designed to protect your computer from all types of software, downloads, websites or anything else that might harbor viruses, spyware and other malicious programs.
Returnil virtualization technology clones a computers System Partition and boots the PC into this system rather than native Windows, allowing you run your applications in a completely isolated environment. If the PC is attacked or gets infected, all you need to do is to simply reboot the PC to erase all changes. After reboot, the system will be restored to its original state, as if nothing ever happened.
Windows XP/2003 Server/Vista