Ok, I got connected to broadband and my kids and I are able to watch Netflix on our smartphones. My tv just has s video, coaxial cable and the old yellow whatever rca plug inputs. No Wii and I don't even know what a roku device is. I need something cheap that will connect modem directly to tv. No, I'm not going through a computer. Though I suppose I could if I really wanted to.
You cannot hook up your cable modem directly to your TV. What comes out of your modem is "computer stuff", not "TV stuff". So, you need something that essentially makes your TV understand "computer stuff". So, you need some sort of device. I will note that newer HDTVs can be "smart TVs", meaning that they have "computer stuff" built into them.
There are four basic ways you can add Netflix to your old CRT:
1) Digital media adapter
2) Bluray player
3) A gaming console
A "digital media adapter" will basically be a small box that you connect to the TV that then allows you access to streaming content. Some might also allow you to stream content from your computer to box over your local network. A Roku is an example of a digital media adapter. So is an Apple TV. Here is the most basic (and cheapest Roku) and it should definitely work with your TV:http://www.amazon.com/Roku-2450D-LT-Streaming-Player/dp/B008R7EVE4/ref=sr_1_1?ie=UTF8&qid=1370696397&sr=8-1&keywords=roku+2lt
You could also consider the Roku 2 HD or even the Roku 2 XD, but the Roku 3 would not work as it only has an HDMI connection*. There is a comparison chart between them down further on the Amazon page that I linked to just above. Also, an Apple TV would not work for you as it also only has an HDMI cable*. With your current TV, the Roku 2 XD would likely be a waste as the main additional feature is 1080P support and your TV likely cannot even do 720P.
* You could potentially make use of an HDMI connection with your TV with a converter box, but that is an added expense/hassle that it not likely worth it. I supposed if you think you might get an HDTV a some point in the near future, it might be worth it for "future planning". Since the Roku 2 LT is only $39, however, I would likely just go with it or if you want to go with a Roku 2 XD or XS as they will support your current TV without a converter box but also have HDMI support and support for 1080P for the future if you do get an HDTV.
The other overall easy option would be a Blu Ray player that supports Netflix streaming. It will also allow you to watch DVDs and BluRay movies, although you will NOT get the full 1080P resolution that a Blu Ray movie can do with your current TV. If you go this route, then make sure the BluRay player has a composite (yellow RCA jack) or S-Video port on it before you buy it. Some BluRay players only have HDMI or component.
I more or less addressed computers in my previous post. It would likely be a pain to hook one up to your current TV unless you happen to have one that support TV video out to a composite or maybe S-Video port.
I kind of addressed gaming consoles in my previous post as well. Wii definitely allows Netflix streaming. I believe so does the PS3 and XBox 360, but I am not 100% sure.