Do you have a digibox and a credit card??
if yes, your relative rings sky, asks for a second hand contract to be sent to the IRISH address. Your credit card is used for the payment. Card arrives and is sent by your relative to you in the uk. You place it in your digibox and give your relative the details of the box, serial no etc. He/She then rings sky saying card has arrived and could they please activate it. Activation signal is sent and your channels come on!
No problem using 2 sky subs in the same house, just have to have an LNB with more than one input. Does your Dad have Sky+?
regards
D.