Then I bought a laptop but ran into connecting problems. To get the laptop connected wirelessly I went to the Netcomm helpline and as instructed changed the wireless name of the router and a couple of other wireless settings. But that resulted in the printer not recognising the wireless router because of the namechange. Then I deleted the printer and reinstalled it on an ethernet cable. So now the laptop can send to print, but the 2 desktops cannot.
Could it be that the 2 desktops are looking for the printer at its old wireless address but now that it's on ethernet they can't "see" it.
Is there somewhere where I can go to check which IP address belongs to which machine. I've tried pinging all the numbers and then switching off one machine and seeing which one don't work but still not sure of which one I'm looking at.