nagravision cam help needed



ive recently purchased a nagravision cam to use with echostar reciever. But am fairly new to all this and appear to be either missing a vital step in setting up system or using the wrong files

ive got fun and silver cards and elvis programmer

do i need the box key and ird from the cam ??

if so how do i get them

or can i just insert the cam and use with the correct files

if so any help on which files would be greatly apprecisted