I am running Win2k, AutoDesk Map 3D 2005 and unable to plot to our HP 1055CM plotter, but everything works fine on our HP 5500. Another user in the office here installed LDT 2005 and is having the same problem. If your plotter is an HP 1055 you may want to think again before upgrading until this issue is resolved. Anyone finding a solution would be greatly appreciated, but for now we're removing 2005 and going back to the previous version.