provided information such as what you are trying to install that gives the error and exactly what the error states.
Without knowing specifics all I can do is point you to where you can download the most current version of the Microsoft Installer:
Instmsia.exe for Windows 98 or Windows Millennium Edition:
Instmsiw.exe for Windows NT, Windows 2000 or Windows XP:
I need to dawnload two .exe program on my XP Pro.
I am severe disabled ,and my Computer knowledge is minimum .Please ,anybody ,help.