have you considered the Intel "little vally" mini-ITX boards? I use a D201GLY2A and would recommend it to anyone looking to build a mini-ITX system.
-they are a better value than the VIA boards right now (more bang for the buck )
-they are about half the price of the VIA boards (MP3car store sells them for $65~$75).
-the integrated 'Core'-based Celerons are more powerful than the VIA CPUs
good luck with your search