I have win xp sp3 I'm working on a laptop for a friend that started out with office 03. He asked me to upgrade him to office 07. So I did. I just ran the office 07 pro plus volume lic. disk. Software went on fine. He decided later that he did not like office 07. So I attempted to remove it and put office 03 back on. I removed it successfully. When I tried to install office 03 it said that it was already installed. When I tried to open word the windows installer screen comes up as if it was installing the program the goes away and never opens. Then I get the message that “this patch package could not be opened. Verify that the patch package exists and that you can access it, or contact the application vendor to verify that this is a valid windows installer patch package.” When I checked Add/Remove program I see it there, but I will not allow me to remove it. I get the same message. What should I do to remove it? Can someone please help me in resolving this problem?