hello, im new to this cnc milling.. and was wondering how i made the code . what i mean is if i wanted to make a square with circle in middle how do i do that.. like i said i no nothing about cnc.. can someone direct me to a 101 tutorial.. and just tell me what to do ... what programs ill need.. i downloaded the mach3 from the website.. and demo of autocad.. what else do i need and what do i do with these .. thanks