How do I get "mailto" to launch thunderbird rather than evolution?

[bgwest]

I've poked around a bit, but cannot locate where the decision to launch evolution when I click on a mailto: link is. I'm using the firefox browser, FC4 distro.
TIA

[lakerdonald]

Goto the URL about:config, and in the filter bar, type:

network.protocol-handler.app.mailto

if nothing appears, right click in the white space, and goto New -> String and type in network.protocol-handler.app.mailto and press enter, then type in the full path to thunderbird and press enter. The effect should be immediate.

[bgwest]

Worked fine, lakerdonald !! Thanks much !!