Transfer .mov files to iTunes?

Hi! I was hoping someone could help me out. I have some movies I created a while back with iDVD. The finished file is a .mov file and I would like to now put this in iTunes so I can sync it with my iPhone and iPad to watch the movies I created. I can't seem to figure out how to get those files into iTunes so I can sync them with my devices and play them on my mobile devices. Anyone have any ideas or figured this out?