Go to D:\Microsoft Flight Simulator X - Steam Edition\SDK\Core Utilities Kit\SimConnect SDK\LegacyInterfaces\FSX-XPACK or similarly where you have FSX Steam installed. Run the SimConnect.msi installer ...

Tested in FSX Acceleration (DX10) and FSX Steam Edition (DX9). Not tested in P3D but should work correctly up to V3. Sound effects may not work in V4. 1 - Extract the zip archive in the folder of your ...