Focussed

Hi all, I really love this Mame front end as it compliments my MCE setup perfectly - Just what I was looking for. My problem is very basic. I am sure you have the solution in not time. I have a Sony Playstation controller plugged into a two port USB playstation/pc joystick coverter thing. This works well to play Mame games with my current configuration. What is bugging me is I don't have a clue how to bind the 'insert coin' & 'start' buttons on the keyboard to the 'select' & 'start' buttons on the playstation joypad. Any ideas? It would be nice to not have to reach for the keyboard to start a game each time.