My first Mac
i have come on dark side mac pro 2.66 quad. used exclusively home recording studio occasional internet browse. confused original 250 gb hard drive comes mac pro. os on drive or elsewhere? how swap out if is? excuse noobness. need following recommendations guys if could. folks. want "bang buck". 3 500 gb internal hdd (was thinking of getting seagates $150 newegg) these noisy. wd quieter? may external drive backup internal drive have projects on it. lacie, glyph, seagate or wd? 3 22" monitors (what rec?) i'll need graphic card power third monitor, right? thinking of close approx. of factory one, seem think isn't good. should go better set of two? planning on getting 4 gb of ram crucial. have been told ram needs installed in pairs. if factory 1 gb in there other four, shouldn't additional 1 gb of ram make total 6? how work? or 5 gb going able used? have bluetooth installed in mac pro. wireless ...