USB drivers not showing up

Hey Everyone, I am running Arduino 16 for my brand new Duemillanove on my intel brand new MacBook Pro. I installed the usb drivers, but they don't show up in the tools menu. What do i do??

They only show up when the board is plugged in, but that's obvious right ?

I'm sure the MAC experts will provide more useful information quite soon.

Problem solved...I downgraded my USB drivers when jailbreaking my iPhone, when I restored them it fixed the problem.

Thanks for the help!