Hi Stephane,
did you already download the new driver from VR Insight side?
http://www.vrinsight.com/devel_shot/index.html
1. Install http://www.vrinsight.com/devel_shot/Setup/Install_VRiSim.exe
2. Install http://www.vrinsight.com/devel_shot/Setup/Install_v737_OVHD.exe
Here an installation guide: http://www.vrinsight.com/devel_shot/Manual/v737_OVHD/V737_Overhead.pdf
And did you do this:
To enable the data communication output, you will need to open the file
737NGX_Options.ini that is located in the folder <FSX
ROOT>\PMDG\PMDG 737 NGX
Once this folder is open, add the following two lines to the bottom of the
file:
[SDK]
EnableDataBroadcast=1
Best regards
Bernd