I just built this for a customer:
Antec Three Hundred Illusion - $59.95
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129066
Western Digital Caviar Black WD6401AALS 640GB - $74.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136319
Corsair 400w PSU - $39.99 after MIR...