Simple Injector

I would like to see a tutorial on just a simple injector.

Like, a one process one. Like Engine.exe (Combat Arms), You can browse for .DLL's, clear the list, etc...

With comments to, to tell what the things do, not just for copying and pasting. Thanks if anyone can fulfill this.

video's say more than words

Okay, 1 question, if i take the injection process, change it to Engine, can i redo it for more .dlls, instead on what it is intended to do?

So, the .dlls could be anywhere.. instead of the folder the .exe is in.