If I had $2,500 to drop right now I would do this:
Intel Core i7 920 Processor LGA1366 2.66GHz 8MB Cache CPU (centrecom) AUD349
Asus P6T LGA1366 X58 6DDR3 FSB1600(OC): (centrecom) AUD278
Corsair DDR3 6GB PC-12800/1600 (3x 2GB) (centrecom) AUD295
OCZ GameXstream 850W SLI Ready PSU (UMART) AUD199
Asus GTX295 1792MB DDR3 PCIE2.0 2 (UMART) AUD599
Intel SSD X25-M 80G SATA 2.5 (ebay, free delivery) AUD450
CoolerMaster RC-932-KKNI HAF Black Case (UMART) AUD209
Microsoft Windows 7 Home Premium 64bit OEM(UMART) AUD119
However I game at 1080p and I have a thing for Intel solid state drives.
The resolution at which you game is very important so you should really figure out the resolution you intend to play at. This in turn will effect what graphics card that is most suitable for you.
Given you are talking about buying in February I would just say sit tight and post again in January next year. By that stage the 5870x2 should have been released and maybe just maybe nvidia may have gotten off it's arse and released something new.
Snurp85 on what basis do you assert the GTX295 is bettered by the 5870? I also point out that here in Australia the price for the GTX295 and 5870 is much the same. Notwithstanding DX11 I would definitely buy the GTX295 if I was building right now. But I am not and neither is the punter so in any event as the punter is only going to be buying next year it is patently clear that he should simply wait to see what better graphics card options present by that time.
I also point out you are suggesting windows 7 pro to a gamer seems rather a superfluous choice.