Hi every one, I have a question in ref. to my Dell 8400 I wanted to upgrade the my intel prescot 3.4 to a quad or dual, the case. motherboard,graphics,and psu. In other words keep my hard drives with windows and my dvd rom. how can I get windows to load on a new motherboard using my oem dell cd? I dont want to spend more then $450 on all upgrades. Is it posible? Thanks