Rafe

Thanks Myke, I did not know that there were 2 different editor in the game. That was what I needed

That is an incorrect statement. I have done a mission in 3d editor and 1 in 2d editor only and still I get mission.sqf and mission.bied What I need to know is what do I need to be able to edit a mission.sqm

I have unPBO the mission, placed it in \My Documents\ArmA 2 Other Profiles\<ArmA2playername>\missions. For some reason I am unable to open the mission with the editor though. I did notice that a mission I was working on from scratch has a mission.sqf and a mission.biedi file. The mission I want to open has a mission.sqm I could use some help please.