I am going to answer part of my own question, just so it is here as a resource on the board.
On my 2001 Marquis, the programing is done by pushing the programing button on the control box located on the rear wall of the electric bay which is the outside bay, front door, divers side. The button should be pushed momentarily one time, no need to hold for four seconds, then released. Then you should push the "LOCK" button on first one the the others of the key bobs. You must fill 4 programming slots, so if you have two bobs you can push each one twice or one three times and the other once. You just need to fill in the boxes so to speak. You then push one more lock button on one of the bobs and you should hear the box click and the locks activate. You can then test each of the functions on all of the bobs and you should be pleased with yourself.
Just to be clear, you do not have to do anything with the ignition switch, it is probably not even connected to the system. You can have up to four bobs, so you have to fill all four memory slots when you program it. It is perfectly happy if you fill all of them with one bob or any combination that you choose. Simply put, press the programing button once, press any combination of lock buttons five times (being sure to press each of the bobs you wish to program at least once) and you are done! Do not press any key other than the lock key during the programing process. Your programing button access hole may be covered with a paper sticker. Punch a hole in the center of it or remove it.
All of this said, the next Beaver in line may be completely different.
My thanks to Tom Halter at Beaver Coach Sales for helping me work this out.
Now, for the part of the question that I still do not have the answer to. Do any of you with 2001ish coaches get a flash of your clearance lights and/or a porch light to come on when you activate your keyless entry?
Thanks!