I just replaced my old ECS motherboard and Celeron D 2.93ghz CPU with a Chaintech Mobo and a AMD Athalon 64 3000+ venice cpu (socket 939). Now if I just hooked it up to my old hardrives and other hardware that still remained the same, would I have to re-install windows? I know a good amount about computer but I have never run into this situation. I am just wondering if I should get all my MP3's and important stuff off of there and just do a complete re-install. If I can just plug in and go, that would kick lots of ***. Im going to have to re-install everything anyway to make way for WIN pro 64x.... But in the end, can I just replace motherboard, boot up and things be cool?