valid1977 - don't dispair - DS was 4yrs 2mos when he was fully trained (for the day - but don't ask me about night....4yrs9mo - not quite yet!) He had absolutely no interest in the potty, I tried everything from age 2. We finally gave up asking him, etc and he finally did it on his own. Be careful with pullups - when we went from diapers to pullups I'm sure he thought "oh great - I can now pee/poop in these things that feel more like underwear" They just prolonged the problem. Pullups were a big mistake for us!
DD on the other hand was fully night and day at 2 1/2yrs!