I am trying to uninstall ATI Home 2009, build 9709 so I may upgrade to the latest build. I deleted the program using Windows (Windows Vista Ultimate, SP 1, 32 bit) and downloaded the Acronis Clean Up Utility. When I try to run the Clean Up Utility I receive the following error message: "Acronis Cleanup error - Non 7-Zip archive" and then there is a OK button to push. Do I need to have a program for 7-Zip to make the Acronis Clean Up Utility run? Appreciate any help.