No, I mean how to get the FSX Gmax gamepack into Gmax.
Ok now I am confused?? I dont think you will see any changes with Gmax itself. the only place you can see the Gamepack is installed is when you export - the default does not have the export to .MDL , but when the gamepack is installed you will be able to export to MDL.
As long as you have a "c\:gmax/gamepacks folder" I think it is installed successfully.
To install the Gamepack as I said before, use the FSX(i've used FS2004)_sdk_gmax_setup.exe, and when prompted, install it to your c\:gmax\ folder. It then automatically create the gamepacks folder in gmax
If this is not what you wanted to know I am really confused :-)
If I am wrong, please correct me . Ive never used the FSX SDK, but if it works more or less the same as FS9, this should help.