|You would connect a cable from your pc to it to then configure it.|
This is diagramed in chapter 3
Installing the 54 Mbps Wireless Access Point WG602 v3
Though now that I have read the manual this appears to be a waste of time.
This does not appear to be the correct unit for you.
Unless you want to disable your wireless card and haul this unit around with your laptop. It is meant for connecting to another switch or router to span a segment wirelessly.
You want a wireless bridge or extender.