I'm getting the H10-250 installed tomorrow. part of the deal is they would replace my dish "if needed". How do i know if i need a new dish ? (capable of getting HI-DEF ?) since I'm recommitting i want a new dish/lnb's. my currant dish is about two years old. my luck has it if they don't replace the dish and lnb's then they will go bad and ill have to pay. any advise ? thanks