I would like to thank you for posting on the answer forum and am very happy to be able to assist you. I see that you would like to hide your network but the Slingbox 500 wont pick it up when hidden. This is part true and part not true. It is true that the scan will not pick up a hidden network, but there should be an other network at the bottom and you should be able to put in the name of your network and the type of security that you have on that connection and it should be able to add when you hit connect.
Hope this helps,
Sling Moderation Team