Ok, I was able to get that issue resolved, thanks to your help! I thought I had installed 64 bit Ubuntu, but was wrong.
Now I can connect, but am seeing a different issue. After connecting, the window paints and I can see the desktop as expected. However, it ignores half of my keystrokes. Also, the window goes blank about every 15 seconds, until I move the mouse or some keystroke. It then takes about 15-30 seconds to repaint, so it is extremely slow. Is there a thread for this that you can point me to, or should I open a new thread?