Thunderbird and Firefox

Question

I'm not sure if I understand 100% of what I'm asking, but here it goes.
I'm pulling Firefox 1.5 and Thunderbird 1.0.7 from the Arch repositories.  Now, in order to get Thunderbird to open URLs from e'mails using Firefox browser, I had to add the following to the "prefs.js" file found in: /home/family/.thunderbird/<profile directory>/:
user_pref("network.protocol-handler.app.http", "/opt/mozilla/bin/firefox" );
user_pref("network.protocol-handler.app.https", "/opt/mozilla/bin/firefox" );
Wihtout this, no browser would open when I clicked on a URL in a Thunderbird e'mail.  You may tell me an easier way to make this happen, but I couldn't find it.
What I was wondering was whether those who maintain Thunderbird for Arch might be able to add some sort of reasonable defaults to the prefs.js file?  If nothing else, konquerer would seem a likely default.
Just an idea.

Answer 1

I'll try the BROWSER environment variable, and see what happens.  I *did* set the default browser in KDE which I assumed would have the same effect, but it didn't work.  An URL in another document, say one opened with OO worked ok, but not in a Thunderbird e'mail.
Exporting this into the users' login scripts would be ok, though.