|I've worked with a lot of HP Printers over the years (I'm certified to repair about 10 different models) and while I'm not familiar with this particular unit, I can promise you, if it's a network printer, there's a way to configure the network settings from the controls (front panel) on the printer just as wanderer said.|
Upon reading this, I quickly opened google and searched "hp 2500 manual" and got a couple of different hits leading guides/manuals in .pdf format.
I suggest you do the same and read them.
Two things to always keep in mind when working with computers and their peripherals:
1) google is your friend
(if you don't know what #2 means, use #1 to search #2)