How do I download the service pack sp1 to run PMDG 737NGX with FSX Steam.  I purchased the package (CD) from flightstore and have a registration key but the PMDG website seems to want me to re-purchase the whole package again as a download - confused!!!!!!!

This:

http://forum.avsim.net/topic/465797-30mar15-ngx-updates-and-some-other-news-bits/?p=3211608

 

And PMDG want you to sign your full real name to your posts, pls.