I can't understand why it isn't working for you. When I install a Captain Sim aircraft, this is what I do:

1. Turn my Avast Free Antivirus Software OFF (I didn't used to have to, but they made changes recently that now require me to turn it OFF)
2. Right click on the installer (csx701_1300.exe in this case) and select "Run as administrator".
3. After it finishes installing, I reboot my computer.
4. After the restart. Start FSX and go for a flight.

If I do that and it isn't working properly (which is rare), I download a new installer and go through the above steps again, only using the "Repair" option. Doing that has fixed my problems every time. So it doesn't make any sense that it doesn't work for you. :(

Mark