Hey, is there any way i can mod the wii to support the use of mouse in the second usb slot? and is it a way i can use it for fps games?
Not that I have ever heard of. Im going to venture a guess and say "No" to that question.
A basic introduction to Wii hacking | Brick Prevention- Things you should never do
Guide: Virtual Wii (Wii Mode) Softmod for Wii U | Guide: Softmod ANY Wii | d2x cIOS Installation Guide | How to Run & Post a System Check