Voilà, essayez cette procédure, pour moi ca a marché nickel :
Navigation Database
PMDG has partnered with Richard Stefan’s AIRAC Cycle website in order to provide users with highly accurate real world navigation database capability for the FMC. You can keep your navigation database up to date with the most current cycle by visiting Richard Steffan at www.navdata.at.
To install the NAVDATA for the fmc:
1) Got to www.navdata.at
2) Download and install the 767PIC/PMDG All-In-One installer
3) Install the navdata into the following directory: FS/FMCWP/NAVDATA ( you made need to make this directory!)
4) Download the SID/STAR database from our 737 Operators Information Center
5) Place all the SID/STAR files into the FS/PMDG/SIDSTARS directory.