Gain Network Printer Access

http://in.pcmag.com/networking/16810/help/gain-network-printer-access

Printers

It's not unusual for a non-administrator user to find that he or she can't print to a network printer, even though an administrator on the same system can. There are a number of possible causes, but one definitely worth checking is whether your printer installs a proprietary network port.
To find out, open the Printers and Faxes dialog box (in Windows XP) or the Printers dialog box (in Vista). Right-click on the printer name, choose Properties, and then the Ports tab. If the port description shows as anything but Standard TCP/IP Port, changing the choice to Standard TCP/IP Port may solve the problem. But make sure to note which check box was originally selected, in case you need to restore the setting.