problems connecting to home network with AVR1700

I just bought a HK AVR 1700. I like most of the features, for the price, however I have not been able connect to my home network to share media from my windows 7 computer. Apparently the use of Airplay depends on this connection, so I can't use that either. The odd part is that the Vtuner does work to play internet radio, so I would have to assume its not a bad network cable. Vtuner connects in a couple seconds, but when I hit the network key on the remote to switch to media sharing it just gets stuck om the "connecting" screen. Anybody else had this problem? Could it be my sharing settings on my computer? I've turned them all on, but to no avail.

Thanks

Thanks for the reply Drock, I downloaded the software, (which of course the User manual never told me about) and I 'm pretty sure I have all the correct sharing settings on my computer. I even temporarily turned off the firewall to try it, but still a no-go. Harman K people won't even answer their phone, either.....any other ideas? is there a special command in the software to search for equipment on the network?