<A target="_blank" href="http://www.iminstant.com/iminstant/iminstant.nsf/d6plinks/CTYR-8ELJQE">Starting with a virtual machine, and old installation disks,</A> this is a test to see how well a machine would upgrade through major releases. It starts with MS-DOS 5.0 and finishes with Win 7. The video runs about 10 minutes.