Yes the router has the WPS button, no problem with that bit I think its the PC where the problem lies. The PC isn't a wireless item, it is connected to the router via a Cat 5e cable.
But unless the printer is connected to the PC via USB I get the message "printer offline" or "printer could not be detected"
Like I say all the latest drivers are installed and the printer is set as the default one (all previous ones uninstalled)
I am seriously thinking of grtting someone in to sort this as Currys don't want to know, but surely it shouldn't be this difficult.