i use cw800 to get legal fta channels, i call DN and add HD services, so now i got a HD dish. With the HD dish the cw800 is not working, is there a setting i need to change or is just wont work with the HD dish?
If you have subscribed and have DN dish you should have a DN receiver as well.
I presume you are using RCA cables as output from the cw800 to connect to the TV, similarly connect the output from Dish reciever to your TV by HDMI cable.
Now by selecting the RCA source on your TV you can watch cw800 SD or by selecting HDMI source you can watch Dish HD channels.
I understand from you "Luis Baez" that you had a legal subscription to Dish and were using CW800 as your receiver instead of a DN receiver. I further understand from your post that you added HD to your subscription. Based on that info, this is my response.
CW800 is NOT designed to decode HD. In fact, most of the FTA receivers are not happy with HD signals. There are a very few which are OK with HD, e.g. Veiwsat HD
Here is a list of FTA HD recievers available
Therefore, what is happening is not unexpected. If you want to get HD, you will have to buy or rent a DN receiver for it, or buy a HD receiver in the list in the above URL, i.e. presuming you have a legal DN subscription for HD channels.