I finaly succeeded in making LSZH, KJFK and KORD visible in FSX.
It looks like all I had to do was to remove a minus sign which was showing in the [trusted] section of the FSX.CFG at the end of the line. Every time I installed one of the airfields the bglmanx.dll file showed up in the trusted section while no messages came asking about trusting this file. The lines in the [trusted] section showed like this:
X:\FSX\fsdreamteam\couatl\couatl.exe.incuoquiqoeloouibirwhtnwckwtowwzaabiecaq=-1
X:\FSX\bglmanx.dll.nehubrluraqohniwiztbannruqcnonriboecbkel=-1
When I removed the minus sign in front of the Nr 1, so that it showed =1, the problems were solved.
I must mention that somewhere in the forum someone advised to uninstall the "Microsoft Visual C++ 2008 Redistributable", because it could interfere with the 2005 version installed bij the Dreamteam programs. So I uninstalled that program some time ago, but with no result at the time.
I thought I should mention this because quite a few people seem to have problems with the addon menu not showing in FSX. After the two things I did mentioned above, the addon menu does show up in FSX now.
I am very glad it all works now, because I think FSDreamTeam is one of the best in making airfield scenery at the moment. It was a shame I couldn't see the airfields in FSX, but now I can, and they are a magnificent pice of work.
Succes to you all, and happy flying.
Peter