The network printer is working fine from the print spooler (Windows Server 2003) and other computers on the network. It's just one XP computer that is having a problem. The user was printing several things, then got 'an error message' and now the computer will not print, even after rebooting and doing delete/add in Printers and Faxes.
Attempting to print a test page immediately brings up a dialog saying the test page failed to print, and offers the print troubleshooter. The troubleshooter offers no further insight.