so normally when i build a new system i get a new hdd and new os and have to reinstall everything. but this time i dont quite have the money for a new os and cant find alot of the important cd keys i need... at least the cd keys that are important to me.... i have vista 64 bit and am thinking of just upgrading my entire system to a amd 8350 cpu, 2 ati 7770 2gb vid cards, 16 gb of ram on a 3 way crossfire/sli ready mobo. what can i expect if i use the same hdd without doing a wipe at all... i know it should still work and im expecting just a driver search for now... but what else can i expect? btw im taking moving all 3 of my hdd one of which has windows....