// Lets assume the Wiimote has the bluetooth address "00:1E:35:3B:7E:6D". If you want the PIN for bluetooth pairing in a simple string, do the following:
char pin[7];
pin[0]=0x6D;
pin[1]=0x7E;
pin[2]=0x3B;
pin[3]=0x35;
pin[4]=0x1E;
pin[5]=0x00;
pin[6]= NULL;
// Now "pin" contains your bluetooth pin that should be used for pairing your devices.