Hello everyone, where can I download Gtools and Channel Master so I can sort and edit my channels? Please help!

Hi everyone! I am new here. I wanted to know what signals can I get with a motorized dish? I want to get the dish 500 and I read online that adding a motor to your dish can give you many channels from different sattelites. Basically, I want to know what signals can I get? and what are the pros...