Winows home network is NOT supported.
It only support DLNA/uPNP devices which provide multimedia files.
""Dear David,
dear gman,
the Network tab is intended to access DLNA/uPNP devices which provide multimedia files within a network.
The Network tab is not intended to be used like the same tab in Windows OS.
Please see quote from Help file:
to play a video file that is on a network (UPnP), click the Video tab, select Network in the Source pane, and then navigate to the location on the network that contains your video file or DVD folder. Double-click on a video file to begin playback. To play a DVD folder, select it and then click the play button. ""
Check the link below
http://forum.cyberlink.com/forum/posts/list/0/10750.page#49833