HUH?
unless Sony has made some HUGE advances I'm unaware of, it's not possible to do that. The PS is sending video signal out, and I assume you are splitting that signal into two monitors. The PS has no idea how many monitors are connected to it and therefor couldn't possibly make decissions about what images show up on a particular screen. At minimum, the PS would have to be build to support that functionality which it wasn't....last I looked.