Process for updating Excel add-in?

Question

I have an Excel 2003 add-in deployed in one of our departments that occasionally needs updated. What currently happens is that I publish the new version from my machine to

Answer 1

We use a separate addin as a bootstrapper.

1. The main addin can update the bootstrapper
2. If the main addin needs an update, it loads the bootstapper, then uses an OnTime call to schedule a call to the bootstrap routine in the bootstrap and immediately unloads itself.
3. The ontime call executes.
4. bootstrapper loads main addin, relaunches main addin, unloads itself.

Complicated, but it works.