Here is my new system list that I priced online today.
Antec Nine Hundred Case $119.99
Intel 975X ATX Motherboard $204.99
Core 2 Duo 3.0Ghz LGA 775 $169.99
4GB 240-PIN DDR2 PC2 6400 $79.00
GeForce 8800GTS PCIExpress $199.99
WD6400AAKS 640GB HDD $84.99
OCZ 600W Power Supply $89.99
HT OMEGA Striker 7.1 Sound Card $79.99
Creative P7800 7.1 Speakers $86.99
ASUS 20X DVD+R $36.99
Saitek Illuminated Keyboard $49.99
Optical Mouse Pad $13.99
RAZER Black 3 Button Mouse $34.99
Acer 22" 5ms Widescreen LCD $249.99
Total Cost $1501.87
Operating System: Vista or XP(OEM) +$160.97
For the hardware challenged; the system price list typically includes the tower case, system motherboard, processor (CPU), memory, video card, hard drive, sound card, speakers, DVD+R Drive, keyboard, mouse and monitor. This system would cost over $2000.00 retail.
Building a system is pretty straight forward, but I would consult an experienced builder before attempting it yourself.