to check your camera audio, turn on hte cameras "display" function.
this is what you'd turn on to see the timecode, etc.
one of those etceteras is usualy the audio's sample rate.
if you're camera footage is 12bit, 32k
in FCP, you can chose to capture as that as Andy says.
but have a look at the captures you've already done.
DO they go out of sync?
if not, then maybe you don't have to worry about creating a new capture preset.
i had some 32k dubs once
(most tape houses here leave their DVCAM decks set up to record 4 channels! They got the machines for playback and have never used them to record!)
the 48k captures were in sync, but i thought ipd do hte "right" thing, and changed to 32k capture setting.
well, that was worse!
the tapes must have been slightly off 32k, and FCP spent an enormous amount of time fixing that after the capture.
i went back to 48k captures, and all was fine.
you'll be converting the audio to 48k eventually, so if it can happen (accurately) on capture, that;s a good thing, i think.
nick