if you had to spend 10000.00 dollars here is my take but remember to substitute you brands or favorites instead
1 Antec SX1040B SOHO File Mid-Tower Server Case (Black)
$138.99
1 Intel(R) Pentium(R)4 Processor (Northwood) 2.2GHz, 400MHz FSB, Socket 478 (No Memory) Retail
$539.00
1 Abit TH7II-Raid i850 P4 Skt478 RDRAM ATX Motherboard w/Audio, RAID Retail
$166.75
4 Samsung Original RAMBUS 256MB 800MHz 16-Device ECC Memory
$368.00
1 Adaptec 3200S RAID KIT 2CH PCI to U160 w/ 32MB SDRAM Retail
$670.00
2 Seagate Cheetah X15 36LP ST336752LW 36.7GB 68pin 15k RPM 3.7MS Ultra160 SCSI Hard Drive
$939.98
1 Seagate Cheetah 73LP (ST373405LW) 73.4GB 68-pin 4.9ms 10K RPM SCSI Hard Drive
$670.99
1 ATI All-in-Wonder Radeon 8500DV 64MB DDR Video Card w/DVI, Video in & Video out Retail
$338.95
1 Creative Labs Sound Blaster Audigy Platinum eX Retail
$225.00
1 Liteon LTR-40125S 40x12x48 E-IDE CD-RW Drive w/Mt. Ranier Retail
$134.50
1 Pioneer 16x DVD 40x CD, EIDE, slot load, internal, DVD-106S
$63.50
2 Sony GDMFW900 Multiscan 24in FD Trintron Display Retail
$3870.00
1 Logitech Cordless Freedom Pro Keyboard & Mouse Combo Retail
$82.25
1 Creative Labs Inspire 5.1 Digital 5700 Speaker
$244.99
1 Artec AM12S SCSI Scanner
$69.99
1 Epson Stylus Color C80 Inkjet 2880x720 20PPM USB/PAR 5 Color Printer Retail
$191.00
2 Western Digital Caviar WD1200JB (WD1200BB Special Edition) 120GB EIDE ATA/100 7200RPM Hard Drive w/8MB Buffer
$469.98
Subtotal: $9183.87
Shipping Method Shipping Charge
UPS Ground (travel time 5-8 business days) $306.47
spend what's left over on software
you could go dualie but that's your call

it would help for the scsi layout above and you could add more scsi drives raided without the restrictions of a 32 bit bus
and this is nice but not intended to be the best just a start off for your thread i would change the speakers to boston ba4800's ,get a better scanner add two more 73 gig scsi drives and get rid of ide completely but would limit the raid 0 array to two drives due to the bus even that would be overkill and i'd probably wait for the next generation r300 all-in-one wonder card from ati as you would get the latest and greatest also i included ati because i like their all around style video cards but am also looking at the gforce video cards and although the gf4 is a nice card i would wait to see what the next generation brings there too
again all this is hypothetical
hope this helps