Well I don't remember much is old this movie... an old man's family I think his kids and grand kids come to visit ( I think it was in England ) and he has in his backyard leprechauns and fairies they are good but there are also bad ones... If you know the title please let me knooowww! I been crazy trying to remember... Lol thanks in advance! (I think the leprechauns or gnomes lived under a waterwheel or a chair in a backyard

From your description it could be Darby o'gill and the little people? It was a disney film.

Darby O'Gill and the Little People (1959) - IMDb

If not darby o'gill, maybe "the gnome mobile"

is it The Great Land of Small
http://www.youtube.com/watch?v=QkJ0oiipwQE

I'm very gratefull but none of these is the movie :( they look just as I said but they are not I really apreciate it if any other suggestions :D THANK U!!