You said, "I do NOT want to use windows media player to connect to my cable service. I merely want to watch the video/audio feed coming from my cable box/DVR in Win 7 in a window that I can hopefully change the size of, minimize, and maximize (full screen with no frame)."
I am able to do this now. I have Comcast Xfinity Cable Service. My Set Top Box (STB) is a simple HD DTA and has no DVR but does have HDMI HD output plus RF analog output. I have been hearing that if your have a STB for Cable service, with DVR, which can be connected to the internet, then you can do exactly what you want to do as I now do with my Dish Network service.
I have a Dish Network VIP-722 Receiver with DVR. It has one USB receptacle. A tiny Sling adaptor is plugged into that USB receptacle.
This tiny adapter integrates the DVR with the Internet. The DVR Receiver is connected to my Cable Modem via an ethernet cable. My Windows 7 Ultimate Laptop in connect to the Internet via Wireless. Wherever I am, at home or on vacation, if I have Wireless access, I can operate my DVR and the Dish Receiver via Wireless from my Laptop. I use a secure Wireless Hotspot for Internet access when away from home.
In order to operated my DVR remotely and watch local TV from my home city stations, etc., I log in to Dish Online and can then do what I normally do using my Dish Network remote at home, from my Laptop. When at home, I can send video and audio from the Laptop to the TV via the Wireless Display (WiDi) transmitter built in to my Laptop. I did have to buy a WiDi receiver located at the TV which connects to an
HDMI input on the TV via WiDi. When away from home, I carry a 10 foot HDMI to connect my Laptop to the Lodging TV. or carry the WiDi receiver, which has both HDMI and Yellow/Red/White outputs, with me. The WiDi simply displays, whatever is on the Laptop display, on the
TV or Projector.
From what I have been seeing when logged in to my Comcast account, you should be able to do the same if you have the required Cable STB with DVR. You may be able to do it with the STB that you now have. I do not know if you require a Sling adapter to do this. Dish provided the adapter to me at no cost.
I like the ability to look at Program Guides, Schedule DVR recordings, watch live TV and Delete DVR recordings from the Laptop, from anywhere.