Printers are located in the HKEY_CURRENT_USER Registry Hive at the same location for Windows NT 4.0 and Windows 2000:

The default printer is located at HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows\Device,
where local printers use a PrinterName,winspool,LPT1: format and network printers use a \\ServerName\PrinterShare,Description,LPTn: format.

All the users printers are located at:

HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Devices

The computers printers are located at:

Windows NT 4.0

<b>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Providers\LanManPrintServices\Print\Providers\LanManPrintServices\Servers\<ServerName>\Printers\<PrinterName></b>

Windows 2000

<b>HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Print\Providers\LanManPrintServices\Servers\<ServerName>\Printers\<PrinterName></b>