I've got a HP Deskjet 6840 which is a wireless print with latest mac drivers and everything. I added it with bonjour and it has the address 192.168.0.7. But it wont print. I have to use a long usb cable to connect to it which is a hassle cos the cable has to go all the way across the room. Why isnt it printing wirelessly. It seems to be set up correctly.