Might want to head over to the Mac forums for more detailed help on your problem -- but BB's don't sync with mac's without a 3rd party program (no DM for us ), and there isn't exactly a good fix for that either. best option atm (in my opinion) is bootcamp'ing with XP.
EDIT** lol, you'll notice that the first thread is MISSING SYNC SUCKS!!.. that's the state of bb+mac at the moment =\
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