I can't hear any voices in ATC, when I go to Settings / Air Traffic Control / Pilot voice, the drop down list for voices is blank. Can anyone tell me where the files should be in FS2004 and also where I can find them on the CD?

Go to the "SOUND" folder in FS, and look to see if you have the file-USEngbig. It's either on CD-1, or CD-2.Part of the secret of success in life is to eat what you like -M.Twain