how to make an injector?

okay. listen up. i dont want to make and injector with options or even a window. i want to make an injector made to inject a specific dll, into a specific process.


so say for example, i want ot inject EXEhack.dll, into Engine.exe, using an .exe task with c++. what commands would i need? i mean i doubt it'd be as easy as:


#include <etc>

int main ()

{

system ("find engine.exe");
system ("inject EXEhack.dll");

}


infact i know the above code is waaaayyyy off.


so, what commands or strings(that's what thier called aren't they? a line of code like 'int main ()'? because i'm alot better at making my own names for things then remembering the real names,....) to do this?

like to find Engine.exe, what command would i use?

and to find a dll would be the same as Engine.exe?

and how would i tell the compiler what to do as injecting? because i'm sure that word has many meanings when it comes to programming.

now once again i dont want to sound like a copy paste noob. so i want ask for the whole source code, i just want the commands i'd need to use, i can figure out the rest...i think....<,<


what about making the exe detect when engine.exe starts?


and one more slightly off topic thing, how would i make an exe show a jpeg or bitmap image on the screen? like not open in windows media or something, just show it on the screen, like a logo or whatever. like say if i made a website called "EXEhacks", (example name <,<) and i made a logo saying "EXE**********" so when someone opened the exe to inject the hack the image shows on teh screen until after the injection.



i'm asking alot i know <,< but bear with me, i'm learning alot easier via threads in the c++ section then via tutorials....