I have a freeview box and a digital aerial. I was going to pay someone to set it up but a financial crisis (xmas) means im going to have to do it myself. I want to put the ariel in the roof space. How do i know where to point the ariel and what do i use to fix it in place? Is it best to put the cable down the outside of the house and drill in or what? Thanks guys Mark ps Im great at following instructions!