hey i recently broke my cpu which was a pentium 4 2.66 ghz cpu on my dell 4600 mobo. now i wan to buy a new mobo, cpu, and graphics card. my dell cpu was an intel and mobo had 1 agp and 3 pci. i want the asus a8n32 sli a8n32 with an AMD 3800 x2 cpu. i am wondering sonce i am switching mobos will i need to purchase a new OS system or is it stored onto the hdd. can i just hook everything up and the OS system will still be accessible or do i hve to buy a new OS system? :?