jeebus @ mmw
+1y
AutoCAD dosetn really help you with designing a chassis, it deffinentally helps you with transfering your design to paper, but the program itself wont help you or give you any pointers for designing a chassis.
a few years ago i bought a copy of AutoCAD 2005 from ebay for 50$ , i recently bought AutoCAD 2006 at the retail price, but that copy of 2005 i had from ebay allways worked for me, you may want to look into ebay...
Taylor