This a new server cum gaming PC pls guide

HI this is my first gaming PC build PLs give ur suggestions or any good deals or modding possible

Processor Intel® core tm i7-940
Intel DX58SO MB or ASUS P6T
Transcend / Kingston 4GB DDR3
1.5 TB Seagate SATA II category
Coolermaster Dominator CM690 Case With 2 x 120mm Case Fans,600w supply
NVIDIA Geforce GTX 295
wireless logitech gaming keyboard and mouse
Altec Lansing5.1 channel speakers
COOLER MASTER V10 Hybrid TEC 120mm Ultimate Performance CPU Cooler
monitor 19" LCD
22X DVD±RW SATA Dual Layer Burner Drive with LightScribe
vista 64 bit

pls guide me on the parts that ive selected and also on cooling cases ,cpu cooler,and power supply wattage

also except resolution which card is better considering heat dissipation issues n performance GTX 295 or GTX 275 or GTX 285

which cooling case is good CM or any other
Expect your help soon