Thanks for the help. I will read all of the articles on the Windows start up problems, which you suggested and hopefully will be able to solve that problem, but the Apple Quick time for Windows is another story.
Even after installing the darned program, the same thing continued to happen: the whole screen covered with it and prompting me again to install. I uninstalled the existing one, same results. Very persistent program. I did find some info about it, indicating that it will be a very complicated task, and that was enough for me to give up, because my computer skills are very limited at best. I need a step by step instructions, or I will make a worse mess of it. Could you help?