As an update to the above question, I have already had someone at my house manually set-up the internet viewing using portforward.com in the event something was wrong with the auto set-up. The test indicated viewing was successful and the show can be viewed on the home computer through slingbox.com.
However, the computer that I am using to remotely access is still picking up audio only. I thought this may help someone in their idea on trouble shooting. Thanks.
It seems that you are having some issues with the Slingbox, since you cannot get the video signal when at remote locations.
The main issue is related to the HDMI cable. None of the available Slingbox models are compatible with the HDMI cable connection. The following link will provide you with further details and a workaround:
Hope this helps!