mod-rewrite for just one forum

[James T Brock]

I've used mod re-write for other purposes, and it seems simple enough. But how do I do mod rewrite for just ONE forum section on my forums? Say for example I wanted http://domain.com/forum/forumdisplay.php?f=21 to always redirect to http://domain.com/forum/forumdisplay.php?f=35, and to keep all of the vbulletin session ID's correct as well?

[Natch]

Don't Mod-rewrite in this situation, use a link forum instead...