I missed to introduce a concept of the package manager here. Packages
are not a Archive file with an instruction for installing like apt
packages. The more an instruction to download the program, that might be
running the setup with a special parameter or downloading an arrive
file with the binaries. That is a little bit of BSD ports or Gentoo Emerge.
This is why I think MSI files aren't the right think to replace the
basic based scripts, that are used at the moment. It simply not what
they have been made for. But if the vendor of the application provides a
msi file of cause it can be used; with a "msi"-script-command.
Maarten Bosma