You don't need to visually scan. Just use your browser's "find" function, and search for "finder" and "password" to get that info.
However, for me, I can't connect to the SA with either slingbox.com (it says I need to use Dish Remote Access) or the slingplayer app (says I need Windows Media Player codec). And, sling.com just takes me to dishonline. So, I'm not sure how others are connecting to their SA's with anything other than DO and/or DRA.
Did you try dish.sling.com? That is how I log in to DRA, at least until it changes to Dish Online. Of course, they have had that warning message of DRA becoming DO for quite some time now! I logged in to DRA a few minutes ago and did what ThomasTrain suggesed and found my finder id and password right away. I did not find it doing a view source when logged in to DO however.