Well when u press a button right after putting the game in during the blue screen (yea this menu isnt listed or anything) u get a screen where u can choose VGA, TV out or scart mode along with a PAL and NTSC mode... no pal 60 listed here. I never have problems using either pal 60 or plain ntsc they feel 100% identical to me. The DC-X itself boots up w a blue logo.
btw my GS doesnt have a switch and boots 50hz (and a funky red logo).. its usa ver. However it was 10 euro.. thats not expensive for a memorycard + cheat features