I don't think any of the Silent Hunter games are "multi-monitor" enabled, like some of the flight sims are. I used to run SH4 on one screen, and have "tools" on the other screen, but the "swapping" screens in Windows like that confuses the SH4 game engine, and then I ended up with strange glitches, like I was <Alt><Tab>ing out of the game, so I quit trying.
