^+1
Changes in this rig:
1.Change that IDE DVD writer
2.Change that Coolermaster PSU,Get Corsair VX550.Far better choice.
(Or any Antec)
3.Ditch Windows Vista and use Windows 7 RC for now.
Then get Windows 7 in March.
4.With the money saved by ditching vista get another 2 GB ram and Get 640GB HD Instead of 320.
^ Dont get that mobo...instead try to get a P43 or P45 chipset mobo...It would offer better features than that G45...And anyways you wont need the onboard graphics as you will be buying a discrete graphics card...
As for the PSU, I would suggest you change it to what shubham suggested... - If the Corsair is costly, then get Antec EA 500...even that is a very good PSU...
Everything is fine at its place But I strongly feel you should make a i5 RIG.
i5 blows C2Q out of water.
Its comparable to i7.
And the LGA1156 mobo that will be used can be utilised for future builds also.
Q9550
Gigabyte GA-EP45-UD3L
2x Corsair XMS2 Single 2 GB DDR2-800 CORCM2X2048-6400C5
Western Digital 640 GB 32MB WD6401AALS
CASE + PSU -
Antec Sonata III with EarthWatt 500w
or
Antec 300 + Silverstone ST50F Strider 500 Watts
Graphics card - Would depend on the resolution of your monitor.
If less than 1920X1200, then go with GTX 260 Core 216 or HD 4870 else if it is 1920X1200/ 1920X1080, then get the HD 4890/ GTX 275...