Network noob needs help!

A friend of a friend runs a small office and the PC's are networked and they all share a printer. I'm not sure, but there's only like 6 or 8 PC's. Apparently, they can no longer print, or installed a new printer (or something, it doesn't really matter)... anyway- they cannot print now, and they want me to come out and 'fix' the situation. All PC's running WinXP. So, does anyone have a good and easy way to set up a networked printer so that each workstation can print? Any tips or hints? Any links? I'd hate to show up at this office and look like a freekin' stooge. I'm a fairly experienced PC guy, but I've never dealt with networking too much; mainly just PC builds/upgrades, and home user software issues like viruses, corrupt Windows, slow PC's, software/hardware tune-ups and the like.... I know my way around XP pretty well, I'm just not very network savvy. Any help is appreciated!!

hd2k

BTW- I'm on a short time-table here, so sooner is better than later.
THANX!

 

This might help, hard to tell without knowing specifics.
http://www.ezlan.net/Installing.html