If it's a message about installing the Journal Viewer (you only tell the window title, not the message itself) the solution can be found in http://www.adobe.com/support/techdocs/329118.html
Else post again with more info, such as the contents of the window.
It seems that just about every function that I prepare to do, the window which says "Windows Installer - Preparing to Install" pops up. This is very annoying. How do I turn it off? I have Windows XP (home edition 2003). Thanks for any help.