Windows RC 7 is available as free download for microsoft website till july 2009! its available in both 32 bit and 64 bit version the download size is about 2.7 Gb and can be downloaded directed from this page Windows RC7 download page however you will need a windows live id in order to downlaod and get a registration key

Please note this is an ISO image so After downloading you will need to burn it on DVD however if you want you can also use WinRAR to extract all the files on your hard drive and then running setup and do the Clean install on another partition this built is pretty stable and soon i will post some screen shots and other useful tips have Fun downloading the next generation windows Today!