Suspect you should be set for your evaluation. As with the user interface for all ArcGIS releases you need to activate a licensed extension before you can use it in ArcMap or ArcCatalog.
At ArcGIS 10 extension activation is from the Customize --> Extensions drop-down menus. Check the extension you'd like to activate for the session. If not listed or is grayed out the extension is not authorized (licensed).
Then you can add the toolbar. Again from Customize --> Toolbars select the corresponding toolbar(s) for the extension you just activated.
(Note: at 9.x and earlier this selection was done from Tools --> Extensions; and View --> Toolbars)
As a caution, activation of an extension is statefull. The ArcMap, ArcCatalog documents you create will require those extensions be present, active and authorized (licensed) to properly open/close, affects portability if you need to move the documents. Also, the ArcMap and ArcCatalog configurations retain the last run settings. Best practice is after saving a document to then deactivate extensions when closing a session. And to reactivate the extensions as needed when opening new session and creating new documents.
Good luck and post back if that was not clear enough to get you going.
Stuart