After reconsideration

As posted above, i think i would not get the Core i7 as its still bit too pricy for me. So this what i got in mind now
CPU: E8400
RAM: 4GB not sure which brand
PSU:Not sure but enough to run
GPU: XFX 260GTX 216 black edition
OS: Vist 32bit (is there 2 types of 32bit vista?)
MOBO: Need recommendation (Not going to Sli or OC)

How much would cost if all build up?

Any reply would be appreciated.

Get 64bit Vista so that you can use the whole 4GB's of RAM

For a PSU both Corsair and Antec are very good,,,i think 600watts will be more than enough for you.

Apart from that you have a GREAT rig! :D