assigning midi knobs to garageband on M-AUDIO OZONE

greetings. i have a mac g4. i am running garageband 1.1.0 panther is my OS, 10.3.9 (i know this is all vintage, but as i have read, the ozone is of the same vintage my mac and os is...).

i would like to assign the midi control knobs to the virtual synth controls in garage band, so i could use them to control cutoff, resonance, etc. there has to be a way to do this, right??!! please help! thanks.