I guess I was lucky with zack, he took to it straight away. Left him without trousers or pants on so it was easyer for him to get to the potty without having to pull pants down. Had to keep sitting him on it when I saw him peeing, but he got the message. Bought him a potty chair from mothercare friday, because his bums got to big for normal pottys lol.
Ive heard that some people put a bit of lemmonade in the bottom of the potty so when mixed with wee it starts to fizz .......havent tried it with zack, but might be worth a go.