If we are talking VFM rather than just cheap, I would go pretty much with Zak33:
Antec 900
Corsair HX520
Abit Dark Raider
E2160 or Q6600 (depends on whether any need for Quad - I do for instance)
WD 500Gb AAKS
2x1Gb or 2x2Gb named PC6400 (depends on use)
Graphics card very much depends on whether gaming (and what resolution & games).