Still need more details, what scale are we talking? Obviously a small mouse sized vehicle needs different equipment than a car sized one. For something small-ish I would suggest an arduino. That will give you a pretty basic micro. As for wireless communication I would suggest either using the arduino bluetooth (
http://www.sparkfun.com/commerce/pro...oducts_id=8255) This will let you bring it back to a computer. If you want you could always just use a standard radio transmitter and run that into some of the analog inputs.
As for speed controllers, that is entirely dependent on the size you want to run and what motors you are using. For smaller robots cheaper speed controllers will work. For larger ones (FRC size) you need the more expensive ESCs. My suggestion for an FRC sized robot would be Jaguars, not because they are better than Victors but because they are CHEAPER. That or find an FRC team to donate the old 883s they have laying around.