It seems that you are having some issues in order to get your Slingbox AV up and running, although it shows solid lights. First, this is a good sign (solid lights), since it means that it is a healthy unit.
In this case, the issue might be related to the security software running on that computer. The following link will provide you with some steps to follow.
As a secondary option, I recommend you test the connection using a different computer. Let us know how it works for you.