As Ian says, your access point name is your wireless ssid. This can be found in the router setup pages or from a wirelessly connected laptop.
Having said that, if it's convenient its much better to use a wired connection for the printer. Your laptops etc will still be able to access the printer and its functions wirelessly.
You really should avoid using WEP encryption if possible. WPA2 is the minimum these days.
Edited by SteelArt (Mon 12-Oct-15 11:54:16)