Returnil is offering the Premium $24.95 version of their virtualization package for free until January 2, 2009.
This is a great way of beefing up the level of protection on your computer. Basically it's another form of sandboxing so if you already use Sandboxie you don't need this. However Sandboxie is troublesome on some PCs and Returnil is an alternative that's well worth trying.
And if you don't use currently any form of sandboxing then you should, so go get this while it's free.
Here's the blurb from the download page:
"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. Hence the session and all activity, malicious or otherwise, will happen in the virtual environment, not in the real PC 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. All of this without sacrificing computer performance or usability."
How to Get Returnil Pro
Go to this page and follow the instructions: http://www.ghacks.net/2008/12/20/ghacks-christmas-giveaway-returnil-prem...
This page says the offer expires on the 24th of December 2008 but the Returnil page says it is good unil Jan 2, 2009.
Note that you won't get your license key emailed to you until the new year.
Thanks to regular contributor Rick Farrow for letting me know about this offer.