Well, if that's not it, then.  What I've done is uninstalled both the 777 and 737 which have the same activation, and deleted them from the registry, the pc profile/appdata/Roaming/FSX pathway and the games directory. I'm going to install just one and launch the game, to see what happens.  --refer to this post for an update in a few moments. :-*

UPDATE:  Yeah, that didn't work, either.  Now going to try to reinstall service pack 2.  and if that doesn't work, shucks... I'll try reinstalling FSX, of course that means reinstalling everything and a whole day.  By the way, when I installed the 737 just now, I did the offline activation procedure.  Just throwing that in to let you know that I did the install a whole different way.  But didn't work.  Hopefully this next thing will.  Really want to fly these planes. :-/
OH, and one more thing important to know.  My friend with the same 737 from CS I have his installer and his plane is working.  I'm getting the same results from both the one he downloaded and the one I downloaded, so I dont think its the installer or a case of corruption in either one.