Virtualbox is good. Lately I got a few 32 gig Sandisk thumb drives for $18, and installed Ubuntu 386 with Gnome on that and 64bit. Seems to run faster then Virtual machines and is persistent as opposed to LiveDVD's. Also, I can take it with me and boot any computer hardware to Linux that has USB boot option enabled..computer on a stick. Windows can then be still installed by default, and the running Linux easily accesses the native drive. Also, you can boot the linux..even if the native hard drive goes on you. I like windows 7 and C# alot, I also like Linux with Gnome and C# ALOT.