need help with making my dc arcade stick (pic)

[muffinman943]

ok, i have all the parts, and I have read CD vision's tourtorial on hacking a mad catz pad to make a DC arcade stick.. all is well until i run into the problem with having a different model madcatz dream pad it is not too much different from what I can tell.. I know where the buttons are mapped and all, but I have no idea where to find a spot to put the ground wire.. My controller is the second revision of the dream pad model 0300CPB (its not the translucent kind, it looks like the 1st model on the outside) can anybody help me find where to connect a ground wire to get this thing on the go? maybe put a circle/circles of where to put it in paint? Anything would help me.. thanks! Heres a pic of the right side of the controller pcb

http://img166.imageshack.us/my.php?image=img1142yy7.jpg