That link should prove invaluable to you. That's the official Microsoft page for sharing a printer in Vista.
If you don't have Vista then I don't have a link for you as that is the only relevant page I get when searching
the Microsoft site. There are some others but they all relate to Vista.
We can help you set up File and Printer sharing here with 2000, ME,XP, or whatever else you want to use.
Let us know what OS you have and we'll continue to be of help.