How to play a maplestory private v62 server?

i dont understand the concept of playing a maplestory private server v62, i download everything they tell me to. Then too click on the maplestory icon. And when i play, im playing the original maplestory with the original rate. wth ?
thanks but the thing i downloaded had 3 files, they told me to put all of them in, and then to click Maplestory.exe, one of them had kiki, something in it