Dell Vostro 420 Desktop system(S220231AU) $900 discount. Q9400, 4gig, 1TB, 24" Screen $1599
Dont forget there could be Bucky cashback too so may just be worth a try.
Click through and search for ecode S220231AU, configure how you want and at checkout an auto discount of $300 will apply.
Some of the spec is:
Genuine Windows Vista Business with Windows XP Professional Preinstalled
Intel Core 2 Quad Processor Q9400
Dell 24 " G2410 Wide Screen Flat Panel LCD Monitor (VGA & DVI-D)
4GB (2X2GB) NECC Dual Channel DDR2 800MHz SDRAM Memory
1TB SATA 3.0Gb/s Hard Drive with Native Command Queuing
16X DVD + / - RW WITH Dual Layer Write Capabilities
512MB NVIDIA GeForce 9800 GT -supports(2) DL DVI,DL DVI, S-Video Connections card