I have the same problem.  The installation wizard sees the DCS-910, but dview does not.  UPnP is enabled on the camera, router and PC.  The browser connects using ActiveX and Java, but dview cannot find the camera.  I manually added the camera in dview, but still nothing.  I have firmware 1.01.  Does dview not recognize the subnet mask?  Is dview using a port that is blocked?  Dview is on my list of exceptions in the Windows firewall.