I signed up for DISH yesterday. The DISH telephone rep was very nice and asked what channels I watched most, and he said our 120 program is what you need. So that is what I bought. After more investigation I find that while the channels I mentioned are in the 120 line up, others that I would like to have, are not. Is it easy to upgrade to 200 or 250 or am I stuck with what I purchased? Also if it is easy would it be best to do it today before installation tomorrow, or is it something they can do without a service call at a later date? Thanks for any advice.