I don't know what *.uci is.
Anyway, I suppose you want to add support for the J3's external memory, right? And I also suppose you've never coded anything in ActionScript, have you? If so, I'll give you a recommendation: Don't even try it. It's not just a simple line like "ADD: External Memory Support" - you'll have to write lots of code and if it was simple, el maco would do it himself.
