I made a profile just to reply to all the annoying people in this thread.
OP, and anyone who has this problem;
Your Genius tablet will have a website address on it:
www.geniusnet.com
On this website you will find all the genius tablets for sale (they are indeed still making them)
Go to the 'downloads' section of the top menu
Find your model of tablet in the selection menu.
Select the appropriate download option (In this case, mac)
Download and install the damn driver.
It's not that hard and it works.
Fuck all you people who think that you HAVE to have a wacom, what damn difference does it make? A tablet only works as well as your skill is. Don't bust hundreds of dollars on your first tablet, you don't even know if you will like it.
It's pretentious fags like you who make people hate mac users.