How do i make a vbs file automatically go to the next step?

I have my vbs file to open a message box that tells the user not to access this account again then when they click on something it shuts down the computer, after about a week this person started to drag the message box to the corner of the screen out of the way so it wouldnt shut down the computer, i want to make it where the message box will still close and continue like if a button was pressed but i dont know how