Thanks, MortScript looks useful. The download links through to the authors (down) homepage but I found this direct download link for
3.2b17 (beta?) and then guessed
3.1 
With the homepage down I'm struggling to find documentation.
What about
nScriptm?
Is it possible to uninstall software using these programs? Is there a command line interface for the add/remove programs? I'd like to automate the upgrade of some applications.