1. unzip these files to a temporary folder

2. move them into your Uires folder inside your FS9
C:\Program Files\Microsoft Games\Flight Simulator 9\Uires

3. backup and delete dlgsplash.bmp

4. rename one of the files you just copied to dlgsplash.bmp
(you can only rename one of the file)

5. load up flight simulator to see if it worked