Get a $20 d-link Bluetooth stick.
Works instantly - just plug it in.
No cables, no driver problem, not much extra $$, and no throwing away the stupid cable once you get a new mobile next year, since you'll make sure that it will have Bluetooth (trust me, you will, once you've switched to the wireless thing). You don't even have to take the damn phone out of your bag to sync it up.
Bluetooth rocks.
Especially on OS X.
-s*