It seems that you are having some issues in order to get your Slingbox Classic up and running. In this case, make sure to verify if the Slingbox has solid lights.
First, we recommend you to stop using the SlingPlayer software version 1.5 and use the SlingPlayer software version 2.0. This link will allow you to get the latest SlingPlayer software version.
If the Slingbox does not show solid lights, reset the Slingbox and run the set up one more time. The following links will provide you with the steps to follow.
Just make sure to run the Manual Setup instead of the Automatic Configuration.