I bought a house with a mesh dish in the roof and a GI 350i receiver. I get some free channels down here in Puerto Rico but I want to subscribe. The problem is that I cannot find my unit ID. I follow the user guide instructions and press "setup" then "1" "1" on a scrambled channel but all that happens is that the channel changes to 11. I obviously know nothing about this - maybe some one can tell me what equipment I may be missing or wht I may be doing wrong? Thanks.