How to find or set printer IP address for wireless?

[joe at actionline.com]

Joe wrote (in part):
> How to find or set printer IP address for wireless?
> I just got a Brother HL2270-DW laser printer and I cannot figure
> out how to get it installed as a wireless printer on my network.

Stephen Partington replied:
> I would cheat and use my AP and find out what IP address
> was leased out to the printer's name..

Thanks Stephen, but I don't know what my "AP" is or how
to use it to find out what the prihter's IP address is.