Here it is:
The titles says wireless. Well it is sorta.
I took a wireless microcon Gamecube controller that had broken analog sticks and put it in a project box with a ps1 female plug wired to D-pad and A,B,Start,Select. Moved power switch. Works great with all VC NES games.
Youtube video:
http://www.youtube.com/watch?v=YKnsib0IBIs" onclick="window.open(this.href);return false;
I know video is dark. I'm sorry my camera light does not work.
Let me know what you think.

