Here is the error I get when launching the installer from the copy of the DVD on the hard drive at C:\protoolsinstall:
The MenuBox executable file can be run either with command line
options, or from a directory containing a configuration file (e.g.
menubox.ini) or from the root of a medium containing an autorun.ini
file which references a MenuBox configuration file. For additional
information please refer to the software documentation, or to the
MenuBox home page at
www.menubox.com.
File C:\protoolsinstall\Setup.ini
Error: The system cannot find the file specified.