New Computer

I was thinking of building a new system.That's what I am thinking about:
Case:THERMALTAKE VC3000BWS ARMOR JUNIOR BLACK+WINDOW
Motherboard:ASUS P5KC
Processor:INTEL CORE 2 DUO E8500 3.16 GHZ LGA775 - 1333 FSB
Memory:OCZ OCZ2N800SR4GK DDR2 4GB (2X2GB) PC2-6400
Graphics Card:ASUS EN8800GTX/HTDP 768MB PCI-E RETAIL
Hard Drive:WESTERN DIGITAL 640GB WD6400AAKS CAVIAR SE16 SATA
Toughpower:THERMALTAKE W0116 TOUGHPOWER 750W CABLE MANAGEMENT ATI CROSSFIRE CERTIFIED
Processor's Cooler:THERMALTAKE CL-P0310 BIG TYPHOON 120 VX
Graphic's Card Cooler:THERMALTAKE CL-G0099 TMG ND5 NVIDIA 8800GTS/GTX COOLER

So,Is this system good enough for a gamer?Should I use Vista in this system?I would like to buy Ultimate 64bit but not too sure about it.Any advice/changes?.Thanks in advance!

links are nice

I am sorry I didn't post links cause they are all in my language.Anyway here we go:
http://www.e-shop.gr/show_per.phtml?id=PER.700297
http://www.e-shop.gr/show_per.phtml?id=PER.700420
http://www.e-shop.gr/show_per.phtml?id=PER.522552
http://www.e-shop.gr/show_per.phtml?id=PER.558252
http://www.e-shop.gr/show_per.phtml?id=PER.650535
http://www.e-shop.gr/show_per.phtml?id=PER.555251
http://www.e-shop.gr/show_per.phtml?id=PER.513255
http://www.e-shop.gr/show_per.phtml?id=PER.650635
http://www.e-shop.gr/show_per.phtml?id=PER.303709


Actually,I need a really good computer which will not be crashing again and again as my current one,needs to have high FPS for a comfortable GW's environment but also have some of the latest features. I am not going to pay more than 1100euro though thus I came up with this system at first point which seems to me fine...

My current computer is actually a bit ancient and that's the why it is crashing .Have done many formats but it doesnt help when I am running some programms together(e.g. Winamp+MSN+GW)

that computer will take most of the games on a high resolution on high settings, except for crysis and call of juarez i think.

vista would be good for this system as well.

That system is perfectly fine. Considering my Russian is a bit rusty, I had a time translating that, but at least the model numbers were intact. Buy it, build it, love it, technologic? (random Daft Punk moment)

Russian? oO

I love Greek - sadly the only word I can remember is parakalo which can mean either please or thank you depending on the situation. Kosta, I'm impressed with your perfect English at least - and your ability to faultlessly translate "colloquial" english text

Back on topic - yes, that system is fine.