Installing Scenery

I can't get past the "invalid path" message when I try to add scenery to my library. I have used windows explorer to go to the file and see the .bgl files. I must have missed something.
There is a tutorial for adding scenery but it is for FS2002. Would it work for FS98?
There is a tutorial for adding scenery but it is for FS2002. Would it work for FS98?
