There exists this How to:http://forums.contribs.org/index.php?topic=47175.0
Maybe someone on the Doc & Wiki team should add that forum howto as a real How to here http://wiki.contribs.org/Category:Howto
Yes it works !!
Maybe someone on the Doc & Wiki team should add that forum howto as a real How to here http://wiki.contribs.org/Category:HowtoBug created : http://bugs.contribs.org/show_bug.cgi?id=8188