How t make Firefox use KMail
 

When I want to send a page or link in Firefox 2 it opens its own mail program which does not have my addresses or provider entries

How do I make it use KMail by default

In adressbar type in: about:config

key is: network.protokol-handler.app.mailto
value is: kmailservice

AND

key is: network.protokol-handler.external.mailto
value is: true