I put a redirect in the old forum so that all requests to it automatically come here instead. All links to old threads, all google visitors etc. will now find the same thread on the new forum.
It's a good thing too 'cause the old forum was corrupting its database more or less every hour or so. I'd repair the DB and it'd go sideways again an hour later. Bloody annoying.
Anyway, long live the new digs. ^_^
Mad thanks to Twystneko too, NFG's official go-to guy for PHP.