Remember that Windows Installer CleanUp Utility will not remove the actual program from your computer. It will remove the installation files so that you can start the new installation, upgrade, or uninstall over. After installation run the utility, select a program for removing, click 'Remove' to uninstall it.
The new version supports all 32-bit and 64-bit versions of Microsoft Windows. More information and download available from http://support.microsoft.com/kb/290301.