I think that this is probaly what I will shoot for:
AMD Athlon 64 3500+ / 512KB Cache / 2000 MHz FSB / Socket 939 / Processor
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1035203&Tab=11&NoMapp=0$239.99
$273
K8N Neo4 Platinum SLI - Socket 939 AMD Athlon 64 Mainboard - nVidia nForce4 SLI Chipset - Serial ATA RAID - Firewire - DUAL PCI-E - DUAL Gigabit LAN
http://www.pcdirect.com//product.asp?Sku=MBMSK8NNEO4-PLSLI
$173
MSI Geforce 6600GT 128MB 128-bit GDDR3 PCI-Express x16 Video Card
http://www2.newegg.com/Product/Product.asp?Item=N82E16814127147
$188
Mushkin Blue Line Dual Channel 1024MB PC3200 DDR 400MHz Memory (2 x 512MB)
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1056173&Tab=11&NoMapp=0
$140
Raidmax Aluminum Silver Front Astro-268 Case with Power Supply
http://www.edazz.com/raalplascawp.html
$72
Western Digital 120GB Internal Hard Drive
http://www.circuitcity.com/ssm/West.../sem/rpsm/oid/71459/rpem/ccd/productDetail.do
$50
Samsung / 52x32x52x CD-RW / 16x DVD-ROM / Beige OEM Combo Drive with Software
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1216713&CatId=0
$40
Total: $936
AMD Athlon 64 3500+ / 512KB Cache / 2000 MHz FSB / Socket 939 / Processor
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1035203&Tab=11&NoMapp=0$239.99
$273
K8N Neo4 Platinum SLI - Socket 939 AMD Athlon 64 Mainboard - nVidia nForce4 SLI Chipset - Serial ATA RAID - Firewire - DUAL PCI-E - DUAL Gigabit LAN
http://www.pcdirect.com//product.asp?Sku=MBMSK8NNEO4-PLSLI
$173
MSI Geforce 6600GT 128MB 128-bit GDDR3 PCI-Express x16 Video Card
http://www2.newegg.com/Product/Product.asp?Item=N82E16814127147
$188
Mushkin Blue Line Dual Channel 1024MB PC3200 DDR 400MHz Memory (2 x 512MB)
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1056173&Tab=11&NoMapp=0
$140
Raidmax Aluminum Silver Front Astro-268 Case with Power Supply
http://www.edazz.com/raalplascawp.html
$72
Western Digital 120GB Internal Hard Drive
http://www.circuitcity.com/ssm/West.../sem/rpsm/oid/71459/rpem/ccd/productDetail.do
$50
Samsung / 52x32x52x CD-RW / 16x DVD-ROM / Beige OEM Combo Drive with Software
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1216713&CatId=0
$40
Total: $936