First, search for the Internet Setup Assistant by selecting the desktop (click in a blank area on your desktop), then
choose File
Find from the menu bar at the top.
Select the
hard drive icon and
type internet setup into the search field.
Click the magnifying glass to begin the search.
One of the search results should be the "
Internet Setup Assistant".
Double-click on it.
Note: Your window may appear different depending on your version of Mac OS.