How to define kmail within firefox as email client?

I use both Konqueror and Firefox and Kmail as my email client.
Of course Kmail automatically works with Konqueror whenever I click
on an email link. But when I click on an email link with Firefox, I get
an "Alert" message that reads: "mailto is not a registered protocol."

How can I fix Firefox so it will also call the Kmail email client?

---------------------------------------------------
PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
To subscribe, unsubscribe, or to change you mail settings:
http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss