Can anyone provide information how to locate or change between floor levels in AutoCAD Architecture 2011.  I know that in programs such as Chief Architect, Revit and Archicad you can easily navigate between the levels, but the now AutoCAD program seems to be slightly more complex when it comes to this.  

The floor level management can be found in the Project Navigator - Ctrl+5.

Ive done as you have advised.  Many thanks!