Mouse scroll wheel in Mac OS 9

[Greg DeVore]

I posted about this question before but that was right before the list 
went down.  Does anyone know how to get the mouse scroll wheel to work 
under OS 9?  As far as I can tell Revolution doesn't receive a 
rawkeydown message from the scroll wheel in OS 9.  I wrote a little app 
to test this (it would put the rawkey number into a field).  Under OS 
10 I get a keynumber - in OS 9 nothing.
Any suggestions?
Thanks
Greg DeVore