[titan3ium]"What advantages are there to 30 and what setting do I use in FCP? I didn't see any setting for it in my presets?"
The biggest advantage is not having to worry about adding/removing pulldown like you do with 24p. In addition, motion is somewhat smoother because of the extra 6 frames per second. Working with 30p is exactly the same as 60i, so use the DV NTSC codec in FCP. If your footage is 16:9 then capture using the DV NTSC 48K Anamorphic setting.