You have probably visited...
http://gorre-and-daphetid.witt-family.com/
http://homepage.mac.com/doug56/G&D/
http://www.gdlines.com/
Jeff:
Thanks again. Since last responding, I have spent a great deal of time at the "homepage.mac.com" site. I was able to get the ol' G&D up and running on "TrainPlayer" software with the layout background accompanyment thanks to the efforts of the "mac" website author and software developer. From what I learned there, I was also able to ascertain how to "acquire" the digital information from the track plan too. So, now I can quickly integrate all of the curve radius, curve centers, and other track information from the G&D layout into my own plan (I had been scaling off all of this information off of drawings by hand in the past).
This will help me to more quickly and accurately develop my layout plan (to fit my layout room, etc.). The layout backgrounds, and the operations descriptions (with supporting photographs) have really helped me to learn how all of the pictures that I've gathered, and seen on-line (such as at the other websites that you referenced "fit together".
I'm still not done with all of the information the "mac" website provides, as I am still learning my geography, and much much more. Just wanted to let you know that you've been a great help. It just goes to show, that a second (and more serious) look at something often reveals a great deal more than first impressions.
I've also taken another fellow's advice (from this forum) and have begun monitoring correspondence on the yahoo GandD forum. Based on what I've learned so far on the "yahoo" forum, which is a very great deal, I expect that I will be concentrating my efforts there in the future. So, if you don't hear from me again, or if I should prove slow to respond (or reach), it will likely be due to the fact that I am still studying the sites that you recommended; and that I will be watching the "yahoo" forum more in the future.
I just wanted to say thank you. It was because of your suggestion, that I really settled down and took a serious second look at those sites.
Dave