Simple prgraming help

[Banana Sauce all over my b]

So im bored and was just playing around with some ahk scripts, and i came accrost this one http://www.autohotkey.com/forum/topic41756.html it was fun, except you have to keep the window open that you start the script in (im bad at explaining thing, so if you dont understand, run the script) that being said, i wrote a batch script where i could minimise the folder that i started the script from, then press a key that would start the draw script, and close the command promt window, but this is what i get along with the ability to draw. here is my batch code

@echo off
pause
start DrawOnScreen.bat
exit
close

any help is appriciated

thanks