SearchWinSystems.com has a very nice article about the "Windows Installer Cleanup utility" which is included with Windows Server 2003 as part of the Windows Support Tools. Problems with applications may at times prevent you from uninstalling them in the normal manner. This GUI based utility can be helpful and, if you're the type of admin who prefers command line tools, the Windows Support Tools also include a command-line version of the tool, called MSIZAP.EXE. However, this article will focus on the graphical version.