I have: Hopper 1 with 1 Joey and Sling adapter. Hopper 2 with 1 Joey. Three Windows 7 computers with Windows Media Player. When I go to the Home Media screen I only see 2 computers, pressing Refresh does nothing. I checked Network and Sharing center on Win 7 and I see the 3 computers, 2 Hoppers, 2 Joeys and the router.