boolittlek

This was one of my favorites from 3rd/4th grade. I'm brand new to all this emulation stuff. I downloaded the rom and StellaX v1.1.3a. My sidewinder controller seems to only control the left joystick. I'd like it to control the right joystick, if possible, as it's the one used for moving the character and controlling the objects. Any suggestions? Sorry if this is a dumb question, but again, I'm new. Thanks very much.