These are the parts I've ordered from the folks at MotherboardExpress.com.
I'd recommend them for consideration to anybody who wants to "DIY".
All received and assembled, up and running XP Pro...
 

Antec (ANE 20430) TruePower series
430-Watt Power Supply

Case - (exterior)
Cool Master ATC 200 MX
(All Aluminium)

(Interior)4 Fans - two front (intake), 1top and one rear (exhaust).  The back and motherboard tray slides out for easy access.  10 Bays no waiting.

Motherboard - Intel D850MV mPGA 478 pin, ATX, Chipset - Intel 850, 1 AGP slot, 5 PCI slots, 4 RIMM slots (up to 2GB RDRAM), I/O - Ultra ATA/100, 7 USB (Connectors 2-F, 4-B, 1CNR).

Processor -
Intel Pentium 4 2.0 GHz.

Memory - 2 - 256 MB  PC800 ECC RDRAM sticks.

Video Card - ATI Radeon 7500

Burner - Plextor Plexwriter PL-241040

DVD - Pioneer 16X Tray

Hard Drive - Western Digital 40GB 7200/ATA 100
 

NIC: 3Com 3C905TX-based Ethernet Adapter (no longer in use since I've added wireless)
 

3.5 Floppy Drive TEAC

The monitor is a Dell E17FPt.

APC BX 1000 BACK-UPS XS

SeagateBarracuda ATA HD ST380013A-RK