I am not sure I can be of any help, but I have the MAAM DC-3 working in FS2004 and FSX...I guess I got lucky. The first thing I would check is the airplane folder in 2004 and see if it is there. If you installed FS2004 in a different directory than the default (recommended) then did you direct the installer to that directory. Do a search and see where it ended up if you can't find it. Let us know what you find. Unfortunately there isn't much activity here, but this is one fine airplane and if you use "beam" for navigation you can fly back in the 40's...Good luck