Note some things won't work that were supported by AES.
Also a severe performance drop will happen
1) Download BOTH Boston 2.0 and 2.1
2) Install them into:
C:\Program Files\Microsoft Games\Microsoft Flight Simulator X\Addon Scenery\boston-logan2
3) Since the installer was made for Fs2004 you need to manually update the Scenery database.
Do this by clicking on the "settings" menu option then "scenery library" tab on the side.

4)Then click add area:

Find the installed area and double click on it.
5) download and install the file included on the next post. Put it into the "scenery" folder in the install location
6)restart FSX and go fly!

Results

