the easiest way is with my MacMiner app (if you're running 10.
:
https://bitcointalk.org/index.php?topic=166347.0but as pro said, with a slim design like the MBP you are taking a risk and if you're going to mine it's worth setting options to make it run slightly slower to put less stress on the machine e.g. -f 60 for poclbm or -I -10 for bfgminer and always run smcfancontrol with the fans maxed out.