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Dell.com has the Vostro 1000 AMD Sempron 3600+, 2GB, 80GB, 15.4", for $434 with free shipping.
Select 2GB Shared Dual Channel DDR2 SDRAM at 533MHZ, 2 Dimm [add $35].
Final Price for this deal: $434 + Free Shipping

Description:
* Mobile AMD Sempron Processor 3600+
* Genuine Windows XP Home Edition
* 1 Year Basic Limited Warranty plus 1 Year Mail-in Service
* 15.4 inch Wide Screen XGA LCD Anti-Glare Display
* 2GB Shared Dual Channel DDR2 SDRAM at 533MHZ, 2 Dimm
* 80GB 5400RPM Hard Drive
* 24X CD Burner/DVD Combo Drive with Cyberlink Power DVD
* ATI Radeon Xpress 1150 256MB HyperMemory (integrated)
* Dell Wireless 1395 802.11g Wi-Fi Internal Card