I have looked on the internet for countless hours, and toiled, and toiled again searching for ways to basically "downgrade" (supposedly) my system to XP, but NOTHING and none of these instructions are working! I have an Alienware, Sentia m3450 notebook. I have tried booting from the XP disk, which I bought, in store, and own a product key to, but it basically gets to a point where it tells me "YOU CAN'T DO THIS." It is so frustrating, and I am about to throw the computer into the street. Someone with some know-how, please help me!!! I am begging you! I have had enough of VISTA and want to go back to my old familiar, XP! There HAS to be a way around this mechanism they have built into my vista home edition, to delete the whole damn thing, and start my machine up again, where it will RECOGNIZE and INSTALL my copy of XP! Who out there in the world-wide-web is smart enough to help me out??! come guys/girls, I need your know how! HELP! please, as many different strategies/answers R welcome!