Not sure why you have installed it that way.
May I suggest you undo everything you have done to install the program and try it the way I have installed mine.
1. Unzip the Zipfile to a folder.
Gives you the following folders
Images and route maps are for information only.
Open the "effects folder in your download.
There are some files and a single folder which says "textures"
Open up your flightsim so you have a list of folders.
One of them says "effects". Open it.
Copy all the files EXCEPT TEXTURES from your download effects into Effects in flightsim.
Then copy the CONTENTS of the Texture file of your download into the texture file in effects.
Open the "Simobjects" folder in your download.
Copy the CONTENTS of "Animals" into Simobjects/animals in your flightsim .
Copy the CONTENTS of "Boats" into Simobjects/boats in your flightsim.
Copy the CONTENTS of "Sound" in your download to "Sound" folder in your flightsim.
Now for the Tricky bit.
In your download open Scenery/World/Scenery.
Press Ctrl-A.. This should highlite all the docs.
Press Ctrl-C.. This sets up the copy.
Now go into your flightsim, there is a folder call "Scenery"
Open it and scroll all the way to the bottom. There is a folder called "World"
Open it and the are two folders.. One is called "Scenery" Open it.
Now put your cursor anywhere in the opened window and right click.
Then in the new window click"Paste"
That should be that. Hope this helps.