Very simple...
You need a converter to break the import lockout.
No, you do not need a converter for PAL to NTSC.
You only need one because your DC is US, the game is Euro.
Got it?
You don\'t need anything to convert from PAL to NTSC because the game auto-detects that.
If you have a modded DC, you don\'t need a converter at all.
Ask Ryu.