Acer Aspire One Netbook with 10.1" LCD & Intel Atom 1.6GHz for $345.00 shipped.  Here is a screenshot for your reference.  It is very portable at 2.95 lbs and features an Intel Atom N270 Processor at 1.6GHz, 10.1″ widescreen LCD at 1024 x 600 resolution, 1GB RAM, 160GB hard drive, integrated webcam, wireless 802.11b/g, Ethernet, Multi-in-one card reader, Windows XP Home, 6 cell battery, and more.  Note that the user reviews have been very positive.