[ooo-build] How to set default Internet browser in OOo

[espinosa_cz]

Hi guys,
One more question for today. How to set default internet browser - a 
HTTP client - to be used by OOo.
When I click on URL link in text in Writer the page always opens in 
Konqueror despite my default browser is Firefox.
I have set my system (KDE 3.5.10, Mandriva 2009.1) correctly, html is 
associated to Firefox even 'xdg-open http://go-oo.org' opens Firefox.
In UI, in Options, strangely there is option to select email client but 
not browser, the HTTP client. Why?
I have ooo KDE integration installed but anyway it always should honor 
what is set in my system.
So please what is the secret place where I can set this?

Thank you
Jan Uhlir