I'm trying to dock my Inspiron 600m for the first time.  I plug the docking station in, and get the amber power light, no problem.  But when I dock the computer and turn it on, I get this message:  "Your system is docked, but the AC Power Adapter type cannot be determined.  Either undock or insert an appropriate adapter."  I'm using a PA-10 AC adapter.

Is something broken, or do I need to do something differently?  Thanks!