Since Bethesda's games are up in Stardock's Impulse store I was thinking about buying Morrowind GotY on it so I wouldn't have to keep track of my discs anymore. But before I do I was wondering anybody knew whether or not it was compatible with the script extender, the FPS optimizer, MGE, and such forth.

I don't know about Impulse,but a lot of people who used steam did have some problems with mods.
Is impulse anything like steam?

I know steam is fairly compatible with everything now. A while back with enough asking the Steam people made MW work with MCP and MGE works as long as you turn of the steam ingame overlay. I don't have any problems with steam and morrowind and everything else as far as i'm aware of.