Ollie doesn't really bite that much now [atleast, he doesn't bite ME] but whenever he does, I tellhim very firmly 'NO', and sometimes give him a tiny tap on the nose ifhe does it repeatedly. I don't punish him if he just nibbles my figerswhile I'm feeding him a treat, but only when he's doing it out ofaggression. I've never tried the pushing down on the neck technique,and I don't think it's something I want to try, simply because I'd beworried about injuring his neck if a slipped or something.
Good luck curing the biting!
Rachel.