Dell Business has the new Dell Vostro 1310 13" Notebook for $649. Configure with 1.8GHz Core 2 Duo T5670 and 2GB of RAM to reach $799 - $100 code K0J8RWCT2Q6LFQ [Exp 9/3] = $699 with free shipping. Comes with Vista Basic installed. The configuration is spec'd as such:

Intel Core 2 Duo 1.8Ghz T5670, 2GB DDR2, 80GB SATA
DVD/CD-RW, Intel GMA X3100, 10/100 + 56k + 802.11g Networking
13.3" WXGA Screen, Vista Home Basic, 1-Yr Warranty, 58 WHr 6-Cell Battery