BestBuy.com has the Compaq CQ50-215NR 15.4" Notebook PC for $450 with free shipping. [BizRate]
Buy.com has HP Pavilion AMD Dual Core 2.8GHz Desktop PC - Refurbished for $427 w/free shipping.
The HP Pavilion AMD Dual Core 2.8GHz Desktop PC - Refurbished features an AMD Athlon 64 X2 5600+ 2.8GHz dual-core processor, 3GB PC2-5300 RAM, 400GB Serial ATA 3.0Gb/s hard drive, dual layer DVD burner with LightScribe, flash card reader, and Windows Vista Home Premium.
OfficeDepot.com has the Toshiba Satellite M305D-S4831 14.1" Widescreen Notebook for $700 - $150 rebate [Exp 10/4] = $550 with free shipping. [BizRate]
Buy.com has HP Pavilion Media Center m8457c Desktop for $600 w/free shipping.
The HP Pavilion Media Center m8457c Desktop, features AMD Phenom 9500 2.2GHz quad-core processor, 5GB RAM, two 320GB hard drives (640GB total), dual layer DVD burner with LightScribe, 802.11g wireless, memory card reader, GeForce 8400HD 256MB video with HDMI, FireWire, wireless keyboard and mouse, and Windows Vista Home Premium. A 90-day HP warranty applies.