I'll be honest, I have been using windows based PC's for years and as of recently my brother is going for a audio engeneering degree and this requires him to get a mac, out with the PC and in with the mac. So, as you can imagine I have a few questions. Can macs use the same video cards a PC uses? I see that mac's have their own video cards so I was wondering if say a Ati X800 would work with a mac. When upgrading your ram does it have to be "mac ram" or can you use say pc3200 184-pin ddr? Any further information regarding mac compadibility with PC hardware will be most appreciated.