If the old files are in a windows.old file (which they should be) you can run the disk cleanup wizard and it will remove it. Just make sure you have nothing from the previous install that you need for once that folder is gone, its gone.I ran an upgrade with win home 7. I am the administrator. When I try to delete old programs, I get a message that reads require permission from Admin or trusted installer. How do I delete these programs. I put my password as an administrator when I logged in.