Cnnfiguration question

Hello! Sorry to be a newbie and thanks in advance for reading me and helping me out :)

I have a PAL Wii. I gave it to a friend of mine and he installed a D2SUN modchip in it for me. PAL backups are working great, but NTSC ones give a black screen just after choosing Start in the discs channel. I found in Internet that I have to configure the region in the modchip in order to make it read NTSC games, but I didn't recieve any external switch with the Wii.

So I am wondering if there's another way to configure the modchip, by using a DVD for example ?

Thanks !!

No one to answer please ?

OK, if there's no answer, forget about it, I have another little question.

The game I used was scrubbed. Can this be the cause of the black screen?

Thanks :)