Safely install software in a virtual layer - Lifehacker

Safely install software in a virtual layer - Lifehacker: "you can install any program to a transparent layer that snags all attempts that the program makes to write to your system, instead saving them inside of the layer. That means no extra .dll’s and no permanent registry changes"

I use Virtual PC from Microsoft and love it. In fact I use it for testing software on the various OS's from MS. This makes it easy to install software, test, and restore the OS back to a clean install for the next test.

Link:
http://.../hack-attack-safely-install-software-in-a-virtual-layer...