The keyboard is a YPG-225. i have the usb cable it came with i just dont know how to connect it to garage band. thanks for your help
Have you tried just plugging it in via usb, opening GB and loading a software instrument track?
Make sure you have the latest Yamaha USB driver.
it should also come up with a little window that says a new MIDI device is connected.
I just tried connecting it to the usb and opeing gb but nothing happend, its as if it's not even plugged in at all!
Have you checked whether you have the correct driver? Here's Yamaha's download page:
Retrieving data ...