Thanks for the advice, I've made some progress but still need a little help.
Here is what I got,
Enter (default mapping to -) brings up the screen where you can move the curosor to 1 player or 2 players
i.e.
-> 1 player
2 players
Game select (default mapping to 1) moves the cursor back and forth between 1 player and 2 players
Start (default mapping to 2) actually selects 1 player or 2 players and starts the game.
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I remapped,
Enter to - or Joy 1 button 0 (This works no problems)
Game Select to 1 or Joy 1 up, Joy 1 down (Doesn't work)
Start to 2 or Joy 1 button 0 (Doesn't work)
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If I change Game Select and Start to say buttons 5 and 6 then it works. But it isn't as intuitive as moving the joy stick up and down to move the cursor up and down or hitting the 1st button to select.