Dell Vostro 400 Quad Q6600 processor desktop PC + 22" monitor
Intel® Core2 Quad Processor Q6600 (2.4GHz, 1066FSB, 8MB)
3GB 667MHz DDR2 SDRAM (2 x 1GB / 2 x 512MB)
500GB SATA 3.0Gb/s with NCQ
256MB ATI Radeon HD 2600 XT
ViewSonic VX2235wm 22" flat panel
To get this price go to Dell small business, desktops, advanced productivity, and choose the option titled "Massive 24" monitor + $300 Cash Off!" for $1,399.
Then choose the downgraded Viewsonic monitor option that brings the price down to $1,101.10
At checkout enter coupon code 3913182DC576 for 5% discount to bring price down to $1,046.05 delivered.
3% buckscoop cashback available too!
This setup is available with Vista Business or XP Pro.
A couple of suggestions: Don't bother upgrading the memory beyond the 3Gb supplied as XP, at least, can't make use of much more than 3Gb. Also don't bother with speaker upgrade as the Viewsonic has basic speakers built-in