Shawn - I orignally thought this when I saw you were selling your TE because of having a hard time holding it. I don't think it would be difficult to add an external port for a controller to use. First - what would be the ideal controller? NES style? Would u want to use a Duo controller? The main thing is if you are ok with adding an external port to a TE, ie a 9 pin DIN connnector. What would require a modification, probably the best place is on the bottom of the TE, and we would also have to modify the controller to bypass the internal circuitry.
I could follow-up with you later on doing that since I am currently working on another controller project for another member from here. I think it is a great idea. Thoughts on how you would mount the TE to stand while you play?
I just got a PC Engine GT and a Turbo Express last week from Bibliophile who is a member at neo-geo.com and I wanted to know if they can have a controller port mod on these handhelds. I am having a hard time holding these bulky and heavy handhelds in my hands because of being disabled and not having enough strength and also I have problems with my left hand and fingers from tight tendons that make my hand close sometimes. 
So is this mod possible and how much does it cost?
