Derek,
I feel your pain man. This is exactly why you will ultimately be forced into upgrading to Intellicad or Autocad or some other product. Printer makers are making new models every day. But, they are not writing drivers for any of them. WHY? Is this a plot to drive you and me crazy? The answer is No. Windows handles the communications between programs and the printers, plotters, digitizers, scanners and all other external devices. So, those old Dos programs are soon going to be like dinosaurs. This is no fault of the folks at C. & G. it is just the way things are in the current computer world.
Now, what should you do. First, I recommend you go to a class on getting started using C. & G. for Intellicad. A good place to find one is at
www.landsurveys.comNow, before anyone objects, I will tell you that I will be teaching that class, so I do have something to gain personally if you do take the class. But, trust me, you and the hardcore Dos man will eventually be forced to change by the evolution of computer hardware and software.
One last word of caution for you. If you have not upgraded since 1995, you may not want to use the Solar observation module any longer. Unless I am mistaken, the ephemiris you have there is NOT Y2K compliant and will give you the WRONG answer.
Good luck whatever you decide to do.
Larry Phipps
Gruntin', groanin' land surveyor just like you