I can get on the Internet with my Samsung TV. It is brand-new. I try to purchase Netflix Hulu and other apps such as iTunes radio or Pandora. All I get is a message saying not available or not supported. Do I need to sign up for some type of Samsung account to get these App To work
You would only be able to install the apps supported by that TV, likely through a firmware update from Samsung. It does not work like a computer or tablet or phone where you can just install programs on. Sounds like you are just going online with the web browser to the app stores and trying to install it from there, that won't work. If it's a "smart" TV it should already have Netflix and Hulu built-in, and likely Pandora.