That's a tough budget, to need everything. Here's a shot at an Intel build, with comments:
ASUS VW192T+ 19" 5ms Widescreen LCD Monitor - Retail
Model #:VW192T+
Item #:N82E16824236056
$139.99 -$20.00 Instant $119.99
Only 19", but includes speakers, and is 1680x1050.
Intel Pentium E5200 Wolfdale 2.5GHz LGA 775 65W Dual-Core Processor Model BX80571E5200 - Retail
Model #:BX80571E5200
Item #:N82E16819116072
$72.99 $72.99
This chip is a slug at stock, and there isn't money in the budget for a decent cooler to help with overclocking. $36-$40 will buy a decent cooler, and $47 more will let you get an e7400.
MSI R4830-T2D512 Radeon HD 4830 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready Video Card - Retail
Model #:R4830-T2D512
Item #:N82E16814127420
$99.99 -$10.00 Instant $89.99
This card may struggle in some titles at 1680x1050, but it's the best this budget can do. Anything less demanding (perhaps only a year or two old) it will handle without breaking a sweat.
Seagate Barracuda 7200.10 ST3250410AS 250GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
Model #:ST3250410AS
Item #:N82E16822148262
$54.99 $54.99
Logitech 967973-0403 Black PS/2 Standard Deluxe 250 Desktop - OEM
Model #:967973-0403
Item #:N82E16823126017
$13.99 -$1.00 Instant $12.99
Includes an optical mouse.
Rosewill R222-P-BK Black Steel ATX Mid Tower Computer Case - Retail
Model #:R222-P-BK
Item #:N82E16811147095
$29.99 -$3.00 Instant $26.99
All of the cheap Rosewill cases are adequate. Cooling isn't great though. You'll be fine for stock or a mild OC, but for anything more you may need to add the optional 120mm front fan.
GIGABYTE GA-EP43-UD3L LGA 775 Intel P43 ATX Intel Motherboard - Retail
Model #:GA-EP43-UD3L
Item #:N82E16813128380
$84.99 $84.99
Antec earthwatts EA430 430W ATX12V v2.0 80 PLUS Certified Active PFC Power Supply - Retail
Model #:EA430
Item #:N82E16817371006
$69.99 $69.99
That OCZ Fatal1ty looks good, but until I've read a competent technical review of it, I'll still suggest a PSU I know IS good. This one can power up to a 4850.
A-DATA 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model ADQVE1B16K - Retail
Model #:ADQVE1B16K
Item #:N82E16820211188
$40.99 $40.99
Timings aren't as good as the G.Skill or Mushkin I usually buy, but this is cheaper and I've bought some too and never had a problem.
LITE-ON 20X DVD±R DVD Burner Black SATA Model iHAS120-08 - Retail
Model #:iHAS120-08
Item #:N82E16827106264
$25.99 $25.99
You could save $2-$3 and get an OEM drive, but this one includes software.
Microsoft Windows Vista Home Premium SP1 64-bit for System Builders - OEM
Model #:66I-01939
Item #:N82E16832116488
$109.99 -$10.00 Instant $99.99
Not much choice here, although XP Home might be $89.
Subtotal: $699.89
Sorry, you can't even get a popsicle for 11 cents any more. Of course there's shipping, and you may or may not get a couple of rebates.