Thank you very much Busykid508. I do appreciate your help. Well , looks like a bit of bad news however better than spending days trying to mod my bios and in the end finding out it will not work. If I were to purchase a full licenced copy of Windows 7 ultimate, since it is not a Oem version , it should work on my Dell Demensions XPS Gen 2?? Other choice is to try loader. Thanks again.