Modify EMF file for sending bin requests to appropriate printer

We want to generate an EMF file, and then, based on page count and printer availability, send the EMF file to a specific printer chosen from a list.  If their are bin-specific sections (certain pages need to come from specific bins), how can we select a specific bin based on the printer by modifying the EMF file.  It's been our experience that most 'new' printers have bin numbers outside the normal range.