Well, here's what I've been cooking up (see attachment).

It's working well: http://www.paysforum.com/forums

But it can be done much better then this, so don't install it. The explanation isn't very clear too, so don't use it unless you know what you're doing (I didn't when I staggered through making this and still don't) :)

For french it's very hard to understand :'(

It looks terrible when you click the attachment :(

Thy this URL:
http://www.paysforum.com/flaghack.txt

K