It seems that you are having some issues in order to get the remote connection to your Slingbox PRO-HD.
First, you need to set up the Slingbox for Internet Viewing at the Slingbox location in order to get the remote connection. The following link will provide you with the steps to follow:
Once you finish this process, you need to verify that your computer (at any remote location) meets the requirements for the Slingbox PRO-HD:
So, as you can see, you do not need to configure any computer. You must configure the Slingbox PRO-HD for Internet Viewing.
Hope this helps!