In AutoCAD 2007, you can use many 3D tools within the block editor to edit your 3D blocks. However, you cannot use the 3D Orbit tool to easily view your 3D blocks while editing. Fortunately the block editor has been updated in AutoCAD 2008 so that you can use 3DORBIT. What is the quickest way to access 3DORBIT? Simply hold down the SHIFT key while you press and move the middle mouse wheel!