axiom 49 playing?

i just bought an axiom 49, but i cannot make it play on my mac. i have a digi 002 rack, but no midi cable, so i connected the keyboard with the usb cable to the computer.

what to do? can i play inside Pro Tools, logic and garage band like this?

i haven't installed the drivers that came with it, 'cause it says it isn't needed on the manual.

thanks for your advises

zr §