I have the ROMs for the MAME32 version of Outrun, it loads up fine on the PC, but it doesn't see my PS/2 mouse hack for the controls.

I downloaded the ROMS for the v.90 of MAME that I have on the same machine, and on trying to load the game through that, it shows that files are missing and there are errors.
My questions are these:
1. anything interesting I should know regarding MAME and Outrun?

2. is there a way to make MAME32 see the mouse hack?
I could take or leave this game- but of course my daughter thought it "looked cool". Uggghhhh.