stupid ass dell comp, new system for a friend, i tried to install 11 in place of 10. some error occured, now when i open "11" it says 10.029 something was expected and 11.02.1 something was found. now when i try and uninstall it says access denied, cannont continue, so can't uninstall, when i try and install 10 it says newer verison is already in place. so in short i believe that there is something that needs to be deleted in the registry. and manual deletion of the files doesn't work either. plz help.