well got another and probably better linkhttp://www.ibproarcade.com/index.php?showtopic=599
(btw, I think sonic is one of the games on the arcade...)
well if it's not I'll help look for it.
So far, I've seen only two forums that support an arcade, and since this is one of them... well you get the idea.
Obviously, your choice as if you wish to implement it.
Still looking for one on my forum though. Oh well. *keeps searching*