Hmm for 1600$ he'd get a pretty decent system:
CRT: Samsung SyncMaster 957P
RAM: 1024MB PC3200 DDR CL2.5
Sound: Creative Sound Blaster Audigy2 ZS
CPU: Pentium 4 3.00GHz, 1024kB Cache (Prescott)
MB: MSI Neo2-FIS2R
Gfx: Radeon 9800 Pro, 256bit, 128MB
DVD ROM: Teac DV-516E
DVD-RW: LG GSA-4082B (probably Dual Layer flashable)
HDD: Western Digital Caviar WD2000JD 200GB Special Edition
Case: Casetek CK-1018 Midi Tower ATX
PSU
Cooling
Input