God, what a pile of poo.

What is happening is that installshield is looking for instmsiW.exe in the temp directory that winzip created. I found a copy in the old temp directory from beta13, and copied it across to the new directory, and ran setup from there.
So then it complains that it can't find instmsiA.exe. Same process.
Now it complains that Windows Installer cannot install the application and that I need the latest sevice pack.
Here is the dilemma, the old laptop is relatively stable in it's current Win95 configuration. Limited, sure, but it does what I need it too. Even if M$ have released a service pack for it recently, I doubt that I'd want to install it. I managed to reinstall beta13 without any problem.
The Win2k box is SP2 (IIRC). I had no intention of signing up to M$ spyware in order to get SP3 on it.

I'm screwed. I think I'm going to wait for JEmplode to catch up. Unless anyone knows of a Microsoft Installer update that doesn't require signing all of my privacy rights away.

:sigh: