Hi there
I just installed a Konica 7020 copier/printer to my PC. I can print from any other application except Autocad. I have the 2006 version of Autocad installed.
Go through the Plotter Manager in AutoCAD and add that printer. Most likely start with "Network Plotter Server" type of setup and use something like HP 5000 driver or such. If that does not work, try another driver till you find a good one.