For those who need it, here's my copy of the aircraft.cfg entries:
[fltsim.x]
title=DHC-2A Misty Moorings 1 Amph1
sim=FSX_DHC-2A
model=amphib1
panel=
sound=
texture=misty1a
kb_checklists=DHC-2A_check
kb_reference=DHC-2A_ref
ui_manufacturer=de Havilland Canada
ui_type=DHC-2 Amphibian
ui_variation=Misty Moorings 1 amph 1
atc_heavy=0
atc_id=N002MM
atc_airline=
atc_flight_number=
atc_parking_types=RAMP
ui_typerole="Single Engine Prop Amphib"
ui_createdby="Aerosoft"
description=This Misty's Beaver version DHC-2 Beaver is a purely fictional repaint to go with the Misty Moorings idea. The DHC2 was manufactured by de Havilland Aircraft of Canada, Ltd. from 1948 to 1969. The MKI is the mostly spread version witha 450 SHP Pratt & Whitney R985. Alternatively a MKII was developed with 550 SHP Alvis Leonides 502/4 engine. Later the less common PT6A6 turboprop powerd Beaver was built between 1964 to 1969. In total almost 1700 planes were built and many of them are beautifully restored and service for tourist flights, transportation and fun all around the world.
###############################
And because it's the Aerosoft Beaver, you'll need to add files to the standard wheel folder. Just look at the file structure in the zip folder and just ass the two interiors folders from the zip to FSX. As I said before - if you do it with two windows open, it's as easy as dragdrop.