.ECM extension?
 

I have a big .ecm extension file, next to tiny .cue and .ccd files for a game.

How do I run it?

.ecm is a compressed file. You need to run unecm.exe to extract the file.

Did you get this game from AB's ISO cellar? There's usually a batch file and unecm.exe included in the archive. If that's the case all you have to do is double click the batch file to unpack the .ecm file.

Yes, thanks, I got that in the meantime. However, I have absolutely idea how to start the game (it's Capitol Hill). Error plays every time I try it (on the CD or after a bizarre installation that's not really an installation).

do you run dosbox in order to run the game?
can you tell us exactly your commands, os ,and everything?

also, somebody move this to troubleshooting