I spent a good deal of time over the last couple of days answering many forum members who responded to my request for assistance on the problem I was having obtaining the DLC I ordered for Flight via Steam. Tom Allensworth, and another polite gentleman whose name eludes me at the moment, were kind enough to inform me that all of those Emails were going directly to staff instead of to the members they were meant for. That, of course, was my fault for not doing it properly.
Nevertheless, the final result was that none of you got the emails I sent to you thanking you for responding. By you providing a lot of valuable info, tips, and links, I was able to formulate a plan that did result in getting the bundle I ordered. It is now on board and working.
So, if you don't mind, instead of trying to resend all of the individual responses to those who assisted me, please allow me to thank you as a group. I do appreciate people taking the time to share their knowledge, and their thoughts and ideas with me.
For the record, I did receieve a short Email from Steam but the instructions were brief and not entirely clear to me. But at least they did finally respond.
Also for the record, what I did was use Contol Panels to uninstall Flight. Then I launched Steam and managed to find Flight on their site. It doesn't automatically come up in their list of games because it isn't a native Steam game. But by carefully noting the links on the pages you can find some that will allow you to search for it and find it that way. Once found, I saw no way to download it, so I just clicked on the Play button and that did it. Once it was downloaded, all of the purchased items were displayed in a window, along with their keycodes. I was then able to log into Live on the Microsoft Flight site and select Redeem Codes (I think that's what it was called). After entering each code one at a time, all of my content showed up in Flight.
Not a nice, clean, intuitive way to do something, but the important thing at this point is that it worked. Although, I'm still not sure why Microsoft brought Steam into the mix.
So, thanks again to everyone who responded.
Dewey