Answer to Q3 from http://www.d2sun.com/sundriver.htm
"How to use the NGC joypad to select the game:
* Press the UP / DOWN button for jump to the previous / next game;
* Press the LEFT / RIGHT button for jump to the previous / next page;
* Press the B button for sort the game list in the order sorting mode or title sorting mode;
* Press the A button for start run the selected ISO!"