[clue-tech] Lnking Firefox and Thunderbird under XFCE 4.2 and FC3

[bof]

Hello,

I'm running XFCE 4.2 under FC3, Firefox 1.04 and Thunderbird 1.0.2. 
There is also installed, by FC3, Mozilla 1.7.7.

How do I get Firefox and Thunderbird to link with each other, so that 
when I click on a URL in Thunderbird, it opens in Firefox, and when I 
click on send page/link in Firefox, it opens Thunderbird?

Currently, both open Mozilla 1.7.7, which, in the crippled version used 
by FC3, does not have a mail client, and I do not know where or how to 
change this default.

BOF