x2 3800 or opteron 165
DFI Lanparty Ultra-D or ABIT An8-Ultra
2g good OCZ or G.Skill memory
evga 7800gt
seagate 250g hdd
Benq dvd-rw with lightscribe or NEC dvd-rw drive
Antec Sonata II(personal pref)
Fortron fx600w, ocz powerstream 520w, or antec trupowerII 550
Audigy 2zs
Should be around 1600 bucks.