How to create own XP printer driver

Question

How would I create my own XP printer driver which will do the following:

• print to file (probably XPS format)
• put this file into a password protected Z

Answer 1

Combine these programs, first cpri (for access through your code to a printer device)

It's in C language

http://sourceforge.net/projects/cpri/

then you can use

http://sourceforge.net/projects/pdfcreator

to get a virtual printer to generate the pdf, xps format output