I just got my first PMDG product 737 800/900and my questions is;When I

Sion, you know that you need the PMDG 737-600/700 before installing the 800/900 series? The 800/900 is an expansion so to say of the 600/700 series, not a standalone product.

It depends on whether he is using the direct download or the CD version. PMDG has a 800/900 only version on CD offered by resellers that does not require the 600/700 platform to operate.

Check for a Boeing-PMDG section in the Planes list.This is so that you can differentiate between default MS Boeings and the PMDG add on.If you are still having problems check the PMDG forum here on AVSIM as they will be able to help you with any problems.