Tatung VS-14428 + mame or swp

[cush]

Hi,
Not sure which is correct section for this but as the screen in cab is the type58 tatung I used here.
I connected an old pc to this monitor in my old merit cab, I use quickres to set the 640x480 which all works ok.
My problems start when I try to play any quiz games either manually or through simple touch.
I have tried soft15khz but in  my xp machine I just get greyed out and cant use it (intel 82865G onboard)
on a win 7 pc I installed soft15 ok but same result - scrambled video when game selected.
Can anyone advise where Im going wrong, I must be missing something,probably simple and obvious lol.

[cush]

Anyone ? please