not sure what "danby set-up" means
Is it a mini fridge you're converting to a kegerator or a prebuilt kegerator?
If it is a kegerator already, what did it come with?
If just the unit, then you'll need:
5lb CO2 cylinder filled with co2, Regulator, Hoses, hose clamps and barbs/fittings, Air/Gas Couplers and a Corny keg.
Oh, and beer.