Using .ctb files with batch plot utility

I have a question for all the AutoCAD 2000i users. I have been using AutoCAD LT2000 and am used to the .ctb file for plot pen propertites. I have now
started using the full blown AutoCAD 2000i and use the same .ctb file for plotting. I am trying to learn the batch plot utility now and can't seem to use my .ctb file. It seems to want a .pc3 file.I have set this up but cannot associate my .ctb file to the .pc3 file. Is there a way to use my ctb file with batch plot or assign this .ctb file to my .pc3 file? Thanks for the suggestions.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.