There are lots of other solutions. Having seen some of the things I"ve seen, if I had it do all over again, I'd never go with training wheels.

there's this for little kids:

http://www.likeabikeusa.com/ which bypasses training wheels entirely and teaches balance skills,
OUCH! $279... for a kid to walk while sitting on the bike?

Training wheels will do just fine... thanks!

I was just remembering learning how to ride a bike... I was around 3-4 years old... and in England (Air Force brat, until I was 4)... and my Dad was teaching me how to ride with my training wheels. Then, I got it in my head that I could do it all on my own. So, off the training wheels went. I had a few wobbly moments... but I was off and riding very quickly. I caught on very quickly.