^^
well first of all, i need a budget from u, so it will be easy for me and also for the other guys to guide u the right way.. anyhow this is wat i hv got for u (below)
Proc:Core i7 920
Mobo:Gigabyte UD5 (yup, do not go for Extreme if u jus dnt wanna OC it)
RAM:Corsair or OCZ or G-Skill (1GBx3=3GB kit modules, preferably 1333 or 1600 Mhz)
PSU:Corsair TX750 (if u hv a single GPU, it will also handle 2 GPUs easily in SLi for nVIDIA or CrossFire X=CFX for ATi)
GPU:get a min of a GTX275
HDD:WD Caviar Blue 1TB
LCD:Samsung 22" 2233SW(FullHD)---------- The best bang for ur money...

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This is a rough product estimate as i do not hv a budget of urs..

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Cheers n e-peace....