Originally Posted by Blue Order

Look on eBay under cycling. Enter Trek as a search term, and when you get the gazillion Trek entires, go to the category "kid's bikes"

For example, there's this 12" Trek on there now that's perfect for learning to ride...

By the way, I learned when I was around that age, first with training wheels, then without. My parents took the training wheels off, walked behind me helping me balance, and kept saying "good, good," but the funny thing was, at some point their voices were too far behind me. I looked back, and they were about 20 feet back-- I had been balancing without them after they let go....