I've made a SourceForge.net project for OpenDash:http://www.sf.net/projects/xbox-opendash
As you can see on the CVS web-portal, the source code (and supporting files) are all there. If you have a CVS commandline client you can download it using:
cvs -d:pserver:email@example.com:/cvsroot/xbox-opendash login
cvs -z3 -d:pserver:firstname.lastname@example.org:/cvsroot/xbox-opendash co -P OpenDash
Instructions on building and running for any of the 3 supported platforms (linux, xbox, and windows) is in the module, as well as a bit of information about running it. The rest of the information needed (configuring, skinning) can be found at:http://th0mas.xbox-scene.com/releases/skinning.html
The main thing that is preventing me from releasing a proper Xbox beta is lack of a skin that has all the necessary features (namely: background, menu wide enough for displaying game titles well, and proper support for dialog boxes, question boxes, and progress bar dialogs.) The skin in skins/skin1/ has all these features but is butt-ugly as I wrote it only to test the functionality of the features. Once I have a skin that has all these features I will release an xbox beta.
My suggestion to skinners is to download and use the OpenDash Windows Build 396 that I released awhile ago:http://forums.xbox-scene.com/index.php?showtopic=454737
The only thing unsupported in that build that should be in the skin is support for timers in QuestionBox's. If anyone gets to the point where this is all that is missing from their skin I will release a new windows build with this supported.
Developers interested in helping with this project, please contact me. I'm interested in seeing where other people would like this to go. If there is interest, I can write a tutorial on how to add functionality to the dash.