Thanks nukedawg -
When I select my plug-in in Maple, I should select keyboard, correct?  When I do this the "config" option is grayed out.  If I select the joystick plug-in, I can see the joystick config (and the correct mappings), but it won't allow me to change any of the keyboard commands.  The option to change keyboard commands is there , but when I click "assign key" it doesn't recognize whatever I press.  
I downloaded xpadder and seemed to configure the joystick fine...but either I'm not using it correctly with NullDC or my NullDC settings are not right.??