1) It's not the D-Pad patch, it's a bug in YameCE with reassigning keys.
2) I'm trying to remember how to dot that, I remember I had to.
Ah, my very post asking for help:
http://www.aximsite.com/boards/showt...ghlight=yamece
Select 'uninstall' from the file menu (you'll have to change the language setting back to English afterwards)
3) If I remember right the PC Engine is the European name for the TurboGraphix, which YameCE emulates.