'<p>'.__('Until WordPress 3.0, running multiple sites required using WordPress MU instead of regular WordPress. In version 3.0, these applications have merged. If you are a former MU user, you should be aware of the following changes:').'</p>'.
'<ul><li>'.__('Site Admin is now Super Admin (we highly encourage you to get yourself a cape!).').'</li>'.
'<li>'.__('Blogs are now called Sites; Site is now called Network.').'</li></ul>'.
'<p>'.__('This screen provides the network administrator with links to the screens for Sites and Users to either create a new site or user, or to search existing users and sites, as well as Dashboard widgets. Those screens are also accessible through the left-hand navigation in the Network Admin section.').'</p>'.