New
#11
Personally i wouldn't think it was Steam.exe you'd need to mess with. But the FM10.exe (If that's what it's called) instead. Locate the exe for FM10 which Steam usually put's games like this in C:\Program Files\Valve\Steam\SteamApps\common (Or something along them lines) and right click on the correct exe file and select properties. Then choose the Compatibility tab and then tick where it say's "Run this in compatibility mode for:" and choose something like WinXP SP3. Also might be an idea to tick "Disable Visual Themes" and "Disable Desktop Composition".
Hope you get it sorted finally. (Oh and i did warn about Steam and their games from third party developers) Most of them work fine but if they're not Valve games and they don't work, you're kind of screwed for any further support from Steam...