Not really. Network Discovery is to see devices on your network -and- be accessible, as per the description in the OS itself : And that's just it - I can't see the NAS on the network. Sure, I can access it with \\nas\share but the Media Center itself cannot. Why not map the share to a drive letter and be done with it? Well, I stream some pretty heavy 1080p files through the network, and need all the bandwidth I can use. SMB (mapped drives) is significantly limited in bandwidth compared to the connections used by uPnP, so choppiness can occur easily. But I digress. I really need to turn on Network Discovery. If there is no way at all, then I will very painfully reinstall the system. That's all I need to know, really. Cheers, Antonius Maximus.