Please, a help with Midi and Oxygen 8

I'm trying to put an Oxygen 8 to work with Pro-Tools on a G4 With Mac OSX 10.3.9 * I plugged the Oxygen in the USB port on the Mac * Added a new external device in the MIDI studio setup * Marked all the 16 TRANSMIT and RECIEVE channels in the MIDI studio setup * (Do I have to enable the "MIDI beat clock" / "Midi time code" / "General MIDI" / MIDI machine control" options?) * Enabled all four Midi input devices under the MIDI menu * Enabled MIDI Thru * Created a MIDI track, rec-armed, and routed it's output to an Aux with virus And seems that the computer just does not recieve any MIDI response... Also, is there a way to check outside Pro-tools, if the computer is recieving MIDI from the Oxygen? Or any other help... would be very welcome! Thank you very much...

did you install the midiman drivers?

Thank you guys, for the reply... But I checked out the M-Audio website searching for the driver, and It says that there is no driver available and no driver required for Mac OS X ... Where could I find this Midiman driver, if really necessary? Thank you again...