I looked up the CHEAPEST possible (no coupon codes, but i did count built-in rebates offered automatically) netbook vs notebook at Dell and Hp's websites:
HP Mini 110 Mi - Intel Atom 1.6Ghz (533Mhz 512K cache), Linux OS, 10.1" 1024x576, 1gb, 8gb solid state, wifi g, Intel graphics
$279
HP Presario CQ60Z - AMD Sempron 2.1Ghz (512K cache), Vista Home Basic, 15.6" 1366x768, 1gb mem, 160g 5400rpm, dvd burner, wireless g, nvidia geforce 8200m graphics
$400
Dell Mini 10 - Intel Atom 1.6Ghz (533Mhz 512K Cache), XP Home, 10.1" 1024x600, 1Gb mem, 120gb 5400rpm, Intel graphics, g wifi
$300
Dell Inspiron 13 - Pentium Dual Core 2.Ghz (800Mhz 1MB Cache), Vista Home basic, 1280x800 13.3", DVD burner, 2GB mem, 160GB 5400rpm, Intel Graphics, Dell g wireless
$500