Please help with this, I wanna get better... :'D

Not really worded too well but what i'm wondering is, how I would direct a mod I want to test on other players? For example, menus that give the player names in-game then whilst a certain name has been selected you can use the button you have bound to the native. I'm not really looking for it to be that in-depth it was just an example what I really wanna know is just how I can use my mods on other people.

I'm using Visual Studio 2010 using C++ and starting from .C files to then make a .Sco file.

I'm a complete and utter noob to this but I am reading up on C and other languages that may help me.

Thank you.