Seeing as this has to do with 4 systems, i'll post it in Forum 42. I made an adaptor so I can use the original controllers from the SNES and the NES on the Wii's virtual console. It plugs into the gamecube controller port and functions just like the classic controller. All the buttons are mapped to normal, but on the Snes controller, both Y and B both function as B and both X and A both function as A. I still have to put it into a small project enclosure, but I figured I'd post some pics of it working anyways...
The whole thing:
The plugins:
A picture to prove that yes, it is plugged into the Wii:
A picture of me playing Zelda, because I only have a SNES controller and don't have any SNES virtual console games:
I will be taking orders if anybody wants me to make one for them. Right now I have 1 NES plugin, and 3 SNES plugins so I can only do 1 double adaptor and 2 Single adaptors. PM me if you are interested.