How can I get the dialog box (below) that opens when you click on an file to
reappear. Now when I go to open this type of file (CSV) it immediately opens
up on the screen and I no longer have the below option. (I think I
accidently removed the check marek from "Always ask before opening this file
type"

Would you like to OPEN the file or SAVE it to your computer.

OPEN SAVE Cancel

Always ask before opening this file type.

How can I get this option back. Your help would be greatly appreciated.
Thanks