If I understand you correctly, your problem is that none of the pad support (ePSXe) or pad plugins (other emulators) directly support your controller+adapter.
In that case, the solution is easy.
Go into the pad configuration for whatever emulator/plugin combo you're using and begin to program it. Except, where you would normally hit a keyboard key to do the controller function, press the button on the controller instead.
With the ePSXe pad support, if you have it set to digital/analog, you can program in the two analog sticks as well. Just click in the box and then wiggle the appropriate stick on your pad in the appropriate direction.
Dan
In that case, the solution is easy.
Go into the pad configuration for whatever emulator/plugin combo you're using and begin to program it. Except, where you would normally hit a keyboard key to do the controller function, press the button on the controller instead.
With the ePSXe pad support, if you have it set to digital/analog, you can program in the two analog sticks as well. Just click in the box and then wiggle the appropriate stick on your pad in the appropriate direction.
Dan