Hi,
I haven't experimented with the Panels setup, but if you are looking for a way to stop IE from launching because someone has clicked a link I have some ideas:
- in Internet control panel, set the default web browser to OE or another application (eg: Stuffit Expander or simple text)
- You can switch back to claris emailer, it does not support HTML links (but I still use it untill today).
- One last thing, are you sure that in Multiple Users panel / Applications Internet Explorer is not checked ?