The Sims Wiki:Shoutbox

ShoutBox

Adding the shoutbox widget

 * 1) Go to the top right of your screen
 * 2) Click 'More'
 * 3) Click 'Manage Widgets'
 * 4) Click 'Shout Box'

Be sure to check out the other widgets while you're there.

For a detailed list of Widgets, see Help:Widgets.