Ok... So I have been messing around with this for a while now...  I have a 4 player control panel...see my sig for pics...
Two Aimtrak Guns...  The CP uses GpWizs...  When I am in Hyperspin and the guns are plugged in I can not get the JOYSTICKS to work in HS.  When I choose a game, they work fine, cause the mame.ini is in control now... When I unplug one aimtrak and then change the joy ids in the settingss.ini file to 1 and 2 instead of 2 and 3, like HyperHQ says, the JOYS WORK...., but my button assignments for Esc, Favorites, Genre, etc will not assign correctly...  I have Windows 7 64 Bit and when I try and use the Aimtrak software, it crashes... 
When in Mame and I configuring the buttons, I know that my Player 1 is actually JOY 2, when I plug the gun back in , it changes to JOY 3...  I think I need to change Aimtraks guns to 1 and 4, but of course the software crashes...   I am almost there...  LOL...  Thanx for advice or help you can offer.