wwb, you're correct..
"ruin" doesn't mean "run in", it means "destroy"... so by saying "it won't ruin the cache", I meant "it won't destroy the cache, [it will run with cache on]".
about ultimatebb.php: to get it to run under php, almost every step has to be different...
I don't have the time to do it right now, I'll probably do it tomorrow (unless someone else wants to do it...