If you have or are willing to add the service plan, the service call "should" only be $15. If your system is that old the tech that comes out will more than likely improve the rest of the system too.
If you are an install or mover the tech will mount a new dish. If you have a HD receiver they will use the "TurboHD" dish (1k.2). If you have a standard receiver they may or may not use one.