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Dell has the Vostro 200 Slim Tower Core 2 Duo E4500 2.2GHz, 2GB, 160GB, 19" LCD, for $449 with free shipping.
Final Price for this deal: $449 + Free Shipping

Description:
Intel® Core™2 Duo Processor E4600 (2.40GHz, 2MB L2 Cache, 800FSB)
Genuine Windows® XP Home Edition
1 Year Basic Limited Warranty and 1 Year NBD On-Site Service
Dell 19 inch Widescreen E198WFP Analog Flat Panel Monitor
2GB Dual Channel DDR2 SDRAM 667MHz - 2DIMMs
Single Drive: 16X (DVD+/-RW) Burner Drive
160GB Serial ATA Hard Drive (7200RPM) w/DataBurst Cache™
Intel® Graphics Media Accelerator 3100
No Floppy Drive
No Modem Option
Integrated 7.1 Channel Audio