PS1 LCD screen solution to wiring problem

Hi guysRecently I purchased 2 "Competition pro" LCD screens which are the same as the playstation LCD screens.For some reason I have been not able to wire it up so that it works via the DB9 vga cable and get it to detect... it works fine using AV input but the quality is bad.I ahve read several documents but none talk about the "competition pro" LCD and although the PS1 inputs are the same as far as pins I still cannot get it working.If any of you have a solution I would be very thankfulMarius