Full Screen on 2 monitors possible?

I would like to run two instances of a game on one pc and have the display come out full screen on 2 different monitors. Is this possible? I have found the command line switch -adapter N which lets you run an instance on a numbered adapter but sadly you cant run the instances in parallel. This is on windows 7.

I partially solved the problem by running the game windowed and then re-sizing and re-positioning the different windows. You can turn off the window border using a command line option and automate the re-sizing and re-positioning from a batch file. I used a utility called nircmd for doing this.