Dropdown Menus in v3

The first link is from a trusted source Heather is awesome.  The others are here for reference.  Note that testing appears to be very important.

http://www.heathersolomon.com/blog/archive/2007/05/15/SharePoint-Tip--How-to-Activate-the-Drop-Down-Menu.aspx

http://sharingpoint.blogspot.com/2007/02/wss-v3-drop-down-menus-in-team-sites.html

http://www.thelineberrys.com/default-category/using-features-to-enable-drop-down-menus-in-team-sites-3.html