Is there a difference in any of the Windows 7 versions? Proffesional, Ultimate, home premium, I am looking at Ultimate right now - I've always gone with that, As i did with Vista.

And yes, Its going to come out to roughly $3000

Also, Does anyone have any suggestions on Water cooling for a i7 920? I cannot seem to find a decently rated water cooling kit for that processor. But i've also read i7's can get to a pretty high temperature, Before actually causing problems, So i don't think i'd be having any problems, But i'm just curious.

Thanks again.