This might not be for everyone but I thought I'd share. Before this I couldnt stand playing my games on Nesoid since the virtual D-pad wasnt that accurate and I would always end up pressing the wrong direction since it is very small and without something to feel you dont know what you are pressing. The same goes true for the virtual A and B buttons since they were so small I would constantly jump when I wanted to fire and vice versa...

So here goes:
- Under user settings make sure screen upside down is checked and set the orientation to only landscape (These settings will make sure you can use the trackball for your trackball D-pad on the proper left side we have always been used to PLUS it makes the screen size bigger)

- Set trackball sensitivity to 2 since the trackball is REALLY sensitive when at 3 or more

- Under key settings set the B button as volume down and A button as volume up

Presto! now you've got a physical d-pad on the correct side (left) and physical buttons on the right...

Hope this helps