What Tyler said is dead on. You can get the control system from IFI (
http://www.ifirobotics.com) as well as some of the other parts. As far as another set of things like the kit chasis and whatnot, you might consider posting something on cd swap(
http://www.chiefdelphi.com/forums/parts.php?) I know many teams didn't use the kit parts and would possibly be willing to trade or give you the extra stuff they didn't use. The wheels, pneumatics, and other kit parts can all probably be purchased off the net or from local suppliers. You might want to look into the EDU-Robot Mini RC stuff that IFI sells
http://ifirobotics.com/edu-rc.shtml it would make a good starting point for a training bot, its a scaled down simple version of the kit control system.
I just read back over my post, and realized i left out a couple potentialy helpful links.
Need pneumatic cylinders for learning about the mighty power of AIR??!?
http://www.bimba.com/techctr/first_free_frm.htm
AndyMark has some really good stuff for building FIRST robots, and they are cool guys too!
http://www.andymark.biz
Need Wheels?
http://www.skywaywheels.com/
Check out this thread for more suppliers:
http://www.chiefdelphi.com/forums/sh...ad.php?t=31971
You can buy metal and plastics online at places like Online Metals (
http://onlinemetals.com/) and McMaster-Carr (
http://www.mcmaster.com/)
Good Luck with your offseason training.