Dell.com offers the Dell Inspiron 530 Core 2 Quad 2.4GHz Desktop PC with 22" LCD, 2GB RAM,  500GB HDD for $879 with Free Shipping

Specs:

-Intel Core 2 Quad Processor Q6600 (8MB L2 cache,2.4GHz,1066FSB)

-Genuine Windows Vista® Home Basic Service Pack 1

-22 inch E228WFP Widescreen Digital Flat Panel

-2GB Dual Channel DDR2 SDRAM at 667MHz- 2DIMMs

-500GB Serial ATA Hard Drive (7200RPM) w/DataBurst Cache™

-16X DVD+/-RW Drive

-Integrated Intel Graphics Media Accelerator 3100

-Integrated 7.1 Channel Audio

-Dell USB Keyboard and Dell Optical USB Mouse

How to get this:

1. Click Here

2. Add Intel Core 2 Quad Processor Q6600 (8MB L2 cache,2.4GHz,1066FSB) [add $140]

3. 2GB Dual Channel DDR2 SDRAM at 667MHz- 2DIMMs [add $50]

4. 500GB Serial ATA Hard Drive (7200RPM) w/DataBurst Cache™ [add $100]

5. 22 inch E228WFP Widescreen Digital Flat Panel [add $90]

6. Total $879 with Free Shipping