Ok--update, i got mamewah to show up on the arcade monitor with advmame and the rom list generated just fine.  However, when i run a game mamewah tells me that the particular game is not supported whereas if i run advmame on a command line it works just fine???  What additional setting would need to be included in the mamewah front end to let advmame do its thing?  I'm stumped.  Great front end--very slick!