Not sure how other platforms work, but in windows when mozilla is installed there's a new menu on the start menu called "mozilla" created. Inside of it is "Profile Manager," "Mozilla," and "Mail" but no "Composer". This shouldn't be hard to add, the Composer can be fired up by "mozilla.exe -editor"
"-edit" also works for command line loading of Composer
This should be a trivial fix (I hope). Someone, please add keyword: "mozilla0.9.9"
Over to curt
This is sort of a duplicate. It is being fixed in the process of fixing 116967, anyway. *** This bug has been marked as a duplicate of 116967 ***