I've just bought a HP photosmart 5520 on the basis that the HP printers had great reviews and were easy to set up.... allegedly. So, I was assured by the shop assistant that the printer comes with set up ink cartridges. I have turned on the printer and followed the set up instructions and it is telling me to insert the ink cartridges. But I can't see any ANYWHERE. There are none in the box or in any of the packaging. Does anyone know where they are?