I finally solved the problem. I rebooted in Safe Mode. I feel a little stupid. That is usually one of the first things I try when I have a problem. Sometimes it works and sometimes it doesn't. I guess I panicked. I had 3 good reasons: 1. The software would not install. 2. Windows picked today to say that I had made too many changes in my hardware when I hadn't changed anything. 3. I could not contact eFrontier. Thanks for all the help.
I would like to know more about my machine. I had a very unimpressive HP when I bought this machine last year to run Lightwave. I went with 32 bit instead of 64 because I didn't know if all my programs would work in 64. I was told that XP didn't make use of more than 2 gigs of memory. I have 2 slots open if the extra memory would make an improvement. Is it worth paying for Windows 64 XP. As I said, I have no interest in Vista. I don't like my wife's machine, and I have one CAD program that will not run in it.