Roger,

Are you running vista 64 bit or 32 bit? I had the same problem with the sound and it worked for me. The sound file you should open is at the bottom, next to it there is written cinfiguration setting. The only reason why I am asking you if you have 64 or 32 bit because when I had the 32 the path was C:\Program files as with 64 is C:\Program files(x86) and 64 bit has them both program files with x86 next to it and without and on my pc everything goes there for fsx, I am not sure if this counts for all the 64bit but that is how it is on mine.

Patrick