I'm in the midst of a mess, trying to get my HR20 to show up as a device that I can share to. I feel as though I have read (and re-read) every post, every bit of Windows troubleshooting advice...except I'm sure the one that would solve my problem. I have tried WMP11, Twonky and TVersity. I have two desktops and the HR20, all connected to a Linksys WRT54G router. Windows firewall and AVG Free on both desktops. No matter what I do, no matter what PC I am using, I have *never* seen a device show up in the "Share media to" box in WMP11. Sharing is on. The right services are on. The DRM files were deleted. The right ports (I think) were opened, but I have also disabled the Windows firewall on both PCs, as well as AVG. The HR20 can connect to the Internet, and the telnet test shows that the HR20 is there. I have rebooted everything, turn off, turned on, etc. No matter how hard I try, I am not seeing any device. This led me to believe that the problem is with the router blocking SSDP packets (and I still think this might be happening), but Linksys was no help and insists it's not their problem. What's strange is that the problem is not with the HR20 only. Neither PC shows up in WMP11 on the other PC, with sharing turned on in both PCs. The only exception is that if I run Twonky on PC A, I can type the server's IP in PC B and access the media server...but still no HR20 menu appears. If you have any ideas, I'm definitely open to suggestions.