Post Script Print Driver - Need Help

I need to build a post script print driver that pulls an xml manifest from a
server on our intranet and then displays custom options in the print dialog.

In other words, I need to customize an area of a post script print driver
dialog box to collect user info, before sending the print job and of course
send the collected variables along with the print job.

How do you suggest I go about this?
Are there any drivers in the wdk I should use as the base code?

One more thing I should mention.. I am a senior C# coder, I have never built
a driver before, and I realize I must learn C/C++

Thanks in advance..