http://www.microsoft.com/DDK/DDKDOCS/WIN2K/custdrvr_36ef.htm Customized Font Management. After getting NT Workstation installed download and install the NT40DDK and see if a simular set of docs is available
http://msdn.microsoft.com/subscriptions/default.asp may need a $200 "Library" level subscription to get the NT 4.0 versions of the "winresource"
In Windows NT, all HPPCL (LaserJet) printers are supported by the HPPCL.DLL or HPPCL5MS.DLL minidrivers. In the HP Laserjet II drivers for Windows NT, the following files are used RASDD.DLL, HPPCL.DLL (which contains most of the escape sequences and the base font names and strings) and RASDDUI.DLL.
See also: