Acer 17.3" Laptop, Intel Dual-Core 2.2GHz CPU / 3GB / 320GB for $498.00.  Shipping is $3.97 for a total of $501.97 shipped.  Here is a screenshot for your reference.  This laptop features an Intel dual-core CPU at 2.2GHz, 17.3" LCD at 1600 x 900 resolution, 3GB RAM, 320GB hard drive, wireless 802.11b/g/n, Ethernet, DVD burner, Windows 7 Home Premium 64-bit and more.  Note that given its size and weight, this is more like a very portable desktop than a true lightweight laptop.  Most places have it for about $589.