Here's How To Set Up A Networked Printer....
Follow these steps on the computer that the printer is hooked up to.
1) Go to the Printers and Faxes Screen in Control Panel.
2) Right Click on the printer you'd like to share. Go to properties, then to
sharing.
3) Fill out the information and click the proper boxes. If the computer using
the printer is using an older version of windows, click the box in green
(see picture below)
Here's How To USE A Networked Printer....
Follow these instructions on the PC's USING the printer....
1) Navigate to "My Network Places" in Windows XP, or "Network
Neighborhood" in older versions of Windows.
2) Find the computer with the printer within the workgroup. Double click on it.
3) Then, double click on the shared printer icon and it will automatically set
up the printer on the computer you are on.
-- For all this to work you would already have to have file sharing set up.
If you dont...look here for how to set it up.
http://www.computerforum.com/showthread.php?p=293758#post293758