The Portal Options page controls the following four options right now:

• Module Activation - You can now remove modules from your portal. Click on a module you want removed, and it will disappear from your Portal after you reload the page! Of course, certain modules cannot be turned off, but most can. The list shows all modules, even ones that you may not be using, so you might see some things you didn't know existed in the Portal.
• Search Preference - This option was on the main portal page, but many people missed it. It allows you to search only for people, or search in both people and ANR sites.
• Portal Styles - Changing portal styles also was on the main page. More portal styles are being added regularly, so check back often to see what's new.
• ANR Quick Access Menu - Don't like the new Quick Access menu? You can turn it off here.

The Quick Access Menu is a little tab on Collaborative Tools and the blog system that invites users to "open" it. When opened, this tab pulls down a menu containing links normally found on your Portal. This will allow you to jump quickly to other systems. Also, there is a search box on the menu that will search in the ANR directory. 

The Quick Access Menu will be rolled out on other systems as soon as possible.

***UPDATE*** 

I just added it to Site Builder. Seems to be working just dandy.