I brought and paid for Windows 7 Professional today from http://www.microsoft.com/uk/education/studentoffer/ After i paid, i got redirected to an application download from digital river. This downloaded a small app onto my desktop which i Ran. This in turn downloaded 3 files from M$ Win7-P-Retail-en-us-x86.exe Setup1.box Setup2.box When you run the exe it extracts all the setup files to a folder called ExpandedSetup. OK, so i burned the folder to a dvd attempted to install it in vmware. BUT the product key I was given from M$ didnt work. So long story short spent about an hour on the phone to M$ being passed around to different people when i got fed up. Ended up looking in the folder at what was there. In the ExpandedSetup folder there is a folder called sources and in there a file called Product.ini. Open that file and it lists ALL the serial numbers for all the possible versions of W7 including VLK's and Datacenter editions. I attach a screenshot showing the list, obviously not all the keys! I then got W7 to install with one of the keys provided in that list!