Robot chassis

Im trying to build a robot, i have and arduino board already so i need a chassis, wheels and motor... where can i buy this as a kit?? that will work with the arduino board.. Thanks

btw i like this one: Arduino Controlled Servo Robot Kit alooot but i dont really want to pay that much.. is there something like that that includes the acrylic, wheels and motors for alot cheaper??? thanks again

will this combination work with the arduino: Pololu - Tamiya 70168 Double Gearbox Kit + Pololu - Tamiya 70096 Off-Road Tires (2 tires) ??

I think you are getting close. I like the tamiya track and wheel set. In combination with parts like here should do it, wherever you choose to buy.

try and make your own chassis. I made some using scrapped CD-ROM/DVD-ROM drives, a touch of mechanics with a screwdriver, some screws and a drill for screw holes is enough.
It's much more fun that way.