They have a plotter driver named WinLINE which supports wide range of the HPGL and HPGL/2 plotters and works under all kinds of Windows (Win9x/Me, WinNT4/2000/XP).
HP Computer Museum
A collection of old Hewlett-Packard computer hardware, software, documentation and other marketing materials from HP's early years in the computer industry.
Services for AutoCAD and AutoCAD related issues.
The great software download site.