dish for hd combo

[itaintfair]

hi guys,i have a hd combo and hooked up to cable and thinking of hooking up a dish to get the max from the box as dishes are pretty cheap,
question i have is
is it worth it?
what dish(i see zon1 zone 2 etc and have no idea about sat)
and what would i get?
and would i recieve premium hd?
thanx.

[opsmonkey]

all the answers to your questions can be found by having a read of the forum mate