My problem now is that i cant get to test a 2 player setup. when i try to remap all the second player hitting tab in mame4all all the 1p buttons work great but none of the 2 player :(

Then when i choose a game i get this menu? Can i have something to improve this?
http://i.imgur.com/UfobRLR.jpg


And for the record when i try playing any NeoGeo game i cant remap the controlls. I try every key on the keyboard but none of them give me a menu to change any key (like tab for mame4all)

Thank you like always for your help;.