It seems that you are having some issues in order to set up your Slingbox with a gaming adapter.
First, we recommend you to check the gaming adapter documentation and make sure that it is setup in a proper way. Then, reset your Slingbox and wait until it shows solid lights. At this moment, you should be able to run the Setup Assistant for Internet Viewing.
If the Slingbox network light blinks or turns off, you will need to check this article in order to know how to fix it up:
Hope this helps!