[Question] AutoIt v3

[Zeroi9]

Hello guys, I JUST donwloaded AUTOIT v3.
I just made this :
MsgBox(0, "Zeroi test bot", "Bot test")
Send("w")
Sleep("1000")
Send("w")
Sleep("100")
Send("w")
Sleep("100")

But I should like to know
instead of just an msgbox, and when you press "OK" the send stuff come, I should like an window the whole time, and if you press START The send stuff starts.
Also I should like to know how to do a looping in this, so it can do the send code until I press a button " STOP "
Thanks!

will +rep helpers.
a