A bit more....

I went to the COACH'S FORUMS tonight and got some examples of places to look at simple robot chassis designs.
 If you guys have time... go take a look at these and let me know if any of them look good.

www.nxtprograms.com
The five minute bot
The explorer
The 3-motor chassis
Multibot

http://www.legoengineering.com/building.html

http://www.education.rec.ri.cmu.edu/...lego/building/.