Don't get me wrong, this isn't an anti-apple rant: I've myself tried to my Macbook laptop to learn aircrack and finally desisted. The most important tools, airodump and aireplay, don't work in Mac, even if you have an injection-capable card.
Your best option is try with Linux either in your Mac (I think Backtrack has a Live CD so you don't have to install anything) or in a non-Apple PC.
& A simple remedy for staying on your mac is to use a wireless dongle (USB) that supports packet injection. It's extremely simple to set up in backtrack.
Don't get me wrong, this isn't an anti-apple rant: I've myself tried to my Macbook laptop to learn aircrack and finally desisted. The most important tools, airodump and aireplay, don't work in Mac, even if you have an injection-capable card.
Your best option is try with Linux either in your Mac (I think Backtrack has a Live CD so you don't have to install anything) or in a non-Apple PC.