Roll Your Own Browser
davidwboswell writes "Oreillynet is running an article about how to create your own
browser with Mozilla. This is a follow-up to a previous
article that surveyed many of the alternate Mozilla browsers currently available including Chimera, Galeon, Phoenix and Aphrodite."
Also related is that O'Reilly has released "Creating Applications With Mozilla" under the OPL, and can be found in its entirety here: http://books.mozdev.org/
(Apologies if this has been mentioned before; I did a quick search and didn't see it.)
It also uses _exactly_ the same properties, methods and events, so you just change the name of the gecko control to the name of your IE control, and it works, I've done it.