If I remember rightly, then there is a menu option for a new install, when you enter this sub menu it will wipe the epg and prompt you for tv shape ( ie 4:3 or 16:9 widescreen etc. ) and then a postcode. If you want BBC NI at 101 with UTV at 103 then use a NI postcode, I use my old postcode from NI when I lived there, BT27 5LZ. As Analoguesat says, use a postcode from any part of the UK depending on which region you want to head up the epg.