How do i change the ip address of a printer

Through the setup menu or connect to it using the current IP address.

The software involved is Paperport Professional 2010 by Nuance and IrfranView and I cannot find a way to change the IP from 192.168.1.68 to 192.168.1.2 that is my problem. Would it be better to change the printer IP back to 192.168.1.68? :cry: