Those users who have downloaded the Flex-License version of Map 2006 will have an extra set of icons in the lower right tray area of the Autodesk Map 3D 2006 application window, that users with the stand alone license do not.

The first icon is the clean Screen button, which will hide your toolbars if need be.  This is a toggle, so click on it to show or not show your toolbars.

The second icon is only visible if you check out a license.  The option to see the borrow time or to turn in the license is available.  An additional pop up bubble will remind you that your license will expire on a certain date and that you can turn in the borrowed license when you first start AutoCAD.