Am running XP with SP3 and have installed Windows Installer Clean Up package. Am a newbie with this but Msicuu.exe isconfusin meand MsiZap.exe won't run without being logged on asan administrator. To be an administrator on XP requires starting a safe boot. Once logged on, message runs that program won't run in safe mode. Have given my user identity computer administrator access in control panel, but still cannot run MsiZap.Am aware that most of files should be kept, but latest Norton Antivirus scan showed 200,000 files & foldersin C:\WINDOWS\Installer folder1 person needs an answerI do too