My problem has evolved since I wrote the earlier query. On some advice from two members on another forum, I entered two commands. The first: sudo apt-get install gnome didn't get me out of terminal mode. The second: sudo depk-reconfigure xserver-org (the same one you just gave me) got me a desktop back. When the query form came up, I used all the defaults because some questions I couldn't answer. I wound up with a Kubuntu desktop _ KDE - instead of gnome. But portions of gnome may be there. What I have is perfectly acceptable to me, but it is like Vista - crippled. Here are the chief issues, which I am trying to solve on my own.
1. I can use Konquerer instead of Navigator, but it comes up on the bottom quarter left hand side of the screen. I can't resize or more this window or any other window. I maximize it by right clicking the proper tab at the bottom of the screen.
2. Firefox no longer has a bookmark toolbar. I can add bookmarks by right clicking, but they just appear as tabs on top instead of in a dropdown menu.
All of this is minor. I am happy to be in business again, but I feel as if I am operating at 80%. It lacks the beauty of what I had on Ubuntu Gutsy. I feel as if I am back at cranky Vista again.