To Install the new textures just copy and paste the below lines to your aircraft.cfg file

[fltsim.1]
title=RAAF Hawk Trainer 2005
sim=RAFV Hawk T1
model=
panel=
sound=
texture=1
checklists=
ui_manufacturer=RAAF
ui_type=BAe Hawk T1
ui_variation=Training Command 2005
description=Designed by Mikko Maleniemi \nGMax Rework by DSB Design\nPainted by DSB Design\nPanel by DSB Design\nhttp://www.rafvirtual.com\nRepeinted by Stephen Newton\n
atc_flight_number=A7-023