I am not a computer genious. I don't understand most of the computer technology. I want to get rid of my costly Comcast cable television only if I can get set up my computer to receive good HD quality internet TV. What do I need to do to make this cost effective and of equal quality to comcast? Also is there a way to hook up my normal tv's to the internet wirelessly so they can still be used also? Any suggestions for me. I don't know anything. I have Windows Vista 32