InstallAware

I am wanting to create a shortcut on the desktop for all users. Is there any predefined variable for this?

I notice that there are two for the programs $SHORTCUTFILES$ and $SHORTCUTFILESALL$ but I only find one for $DESKTOPDIR$.

Its not there by default - but you can get it!
Just use Get Folder Location, and check the All Users check-box.

thanks! that is great. plus I see the folder is list choice is quite extensive.

Yes. One thing to keep in mind is that not all folders are available on all Windows versions. For instance, My Videos comes with XP and later.