Auto-Running Macros in Outlook

I have created a macro that I want to run every time I start up outlook. The macro runs just fine when I manually kick it off.

However, I want it to run automatically. Is there some sort of code that I can enter in the module to make it auto-run (with Excel you can do this, but creating a sub called AUTO_RUN - but this does not work in Outlook).

I have also been experimenting with making an ActiveX Add-In for Outlook - and that seems to compile just fine, but it does not seem to be running in Outlook.

Any help that anyone can offer would be great - thanks.