another thing to note, if you upgrade your processor or your motherboard (not sure what other parts would qualify as microsofts "new computer" status) the oem version will consider your pc a "new" computer and refuse to work.
thats the difference between OEM and retail. retail can be transfered to another computer in time (but there is a limit as to how many times you can do this too from what i understand)
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vista 64 on these rigs
Q9450 @ 3.5Ghz | E8400 @ 4.2Ghz
8gb Muskin Redline. | 2gb Kingston Hyperx
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EVGA 780i FTW ----\--||___||--/---- EVGA 780i SLI
Antec TP Quatro 1000W \ :==^==: / Antec TP Quatro 850W.
Nvidia 9800 GX2 X 2 SLI \|--o--|/ Nvidia 8800 GTS X 2 SLI
1X 500GB Western Digital. \_____/ 3X 150GB WD RAPTOR RAID-0
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