Firefox won't default

OK, I did it and installed Firefox for a second time just to be sure I wasn't missing out.

And I'm beginning to like it, even more than Avant (which I was using before).

Only problem is that I'm having problems getting it to default to load pages.

I've set Firefox as Default, but when I click links from my Favourites folder (created as a folder on my taskbar) or from Outlook Express it opens Avant still.

Any ideas?

If I could crack this I might stick with it :-)

(X-posted to computerhelp and tech_support)