Optical Drive - LG Black 22X DVD Burner
Case - COOLER MASTER Elite 330
CPU - Intel Core 2 Duo E8400
HDD - SAMSUNG Spinpoint F1 HD322HJ 320GB
Keyboard - Saitek Eclipse
Mouse - Logitech SBF-96 Black 3 Buttons 1 x Wheel USB Wired Optical Mouse
RAM - G.SKILL PI Black 4GB (2 x 2GB)
Monitor - Hanns·G HW-173DBB Black 17" 8ms Widescreen LCD Monitor
Motherboard - BIOSTAR TForce TP45D2-A7
Power Supply - Antec True Power Trio
Graphics card - HIS Hightech H485QT512P Radeon HD 4850 512MB
Speaker - Logitech LS21 7 watts RMS 2.1 Stereo Speaker System
Total - $901.15 (Before shipping unfortunately....).
you could probably change some things to the downgraded version. I forgot to add the Heatsink with the retention bracket, but if you dont plan to OC, stock cooling should be efficient enough, though it might be hard to do those push pins, took me like half an hour...
AMD will be about $100+ cheaper, or have better parts for almost the same price.
I will do an AMD build for you later... maybe, depends if im in the mood.
EDIT - oops... forgot the OS... guess its kind of hard choosing the parts for under $900 when you dont have the peripherals...
I will redo my list later.