Returnil System Safe 2011 is a program that can protect your system from everyday´s threats. This program combines features that you can find in antivirus/antimalware programs, system restore utilities, and provides a virtual system for you to avoid installing dangerous programs or saving malicious files.
The "Virus Guard" feature will scan your system for malware. If anything is found, the program will offer you to choose the action you want to perform. Through the "Virtual Mode" feature, Returnil System Safe will keep in the memory a copy of your system files, letting you to use your system without saving anything to your scanned disk. This way, as you're working in an isolated environment, nothing will alter your system. If you suffer any virus attack, simply rebooting your machine will restore your system to its initial state. "System Restore" will let you roll back the changes made to your system that caused trouble.
You can use the trial version of Returnil System Safe for thirty days; or you can opt for the free version, with some features disabled.