Since all the other posts haven't seemed to get you anywhere, find someone in your local community who knows how to use a scope and ask for their help. Suggested sources: vo-tech, commmunity college, ham radio operators, TV shop. Check the yellow pages. Google ARRL to find local Hams. Post the city you live in and there may even be someone on this newgroup who could help you. Someone will at least be able to tell you if you bought a defective piece of equipment.
Richard