windows 7 pro 64
harm, it was pretty simple.
You also need to consider motherboard brand and model, amount of memory, size of power supply, cpu cooling and case
Asus P6 is used a lot... the exact model will depend on just what features you need
12Gig memory is good, since 24Gig is still very expensive
If you are going to use RAID with several drives, a 1000watt power supply, otherwise an 850watt should do
Even if you are not going to overclock, get a good cpu cooler so your Intel chip will last longer
A case with lots of cooling is required
Right now, the graphics card most often recommended is the nVidia GTX 470
Thanks so much for all of this advice. Extremely helpful!
One follow up question: what exactly are the benefits of using Windows 7 Professional over using Windows 7 Home Premium?