Fallout 3 and Fallout: New Vegas have a great modding community, but most mods require launching the game through a mod manager like Fallout Mod Manager (FOMM), or by launching the Fallout Script Extender (FOSE), both of which exist independent of Steam.
I know I can 'Add a non-steam game' to my library (and in fact have been doing this for a while), but is there any way I can get Steam to launch FOMM or FOSE directly, by clicking the 'Play' button on the actual game?
This will enable me to use all my favourite mods, as well as continuing to utilise some of the Steam community benefits of launching the actual game.