My computer keyboard problem is fixed!! Hoorah!!
Jason just emailed me from Aruba and suggested what might be the problem with my keyboard.
With his help I was able to fix the problem.
More information than you may want to know --
Notice that under some letters are little numbers. On a laptop these little numbers are like the number keys that are on the right side of a regular keyboard. I just needed to realize that I had accidentally put the num lock on.