Here is the problem. When trying to open up Internet Explorer 7, the default homepage has been changed to MSN, but the address bar window wants it to go to Yahoo.com and it just hangs and doesn't go anyware. It never fully opens up. When going to the Tools and Internet Options to change it to our ISP homepage, it won't let me change it. It makes using the Internet impossible.
When trying to open up any of the Microsoft Office applications such as Microsoft Word, it won't on I get a error message saying, that I don't have authorization to open the application.
When I try to remove AIM or uBittorrent from his account on the PC, I get an error message saying, that I don't have authorization to do this.
I have changed the settings so that all of us, four members of my family are Administrators and I have tried to remove these programs, and I get the same error message. His account is the only one with this problem.
What do I do?