I have used cutePDF printer driver. You can get it at tucows. It's free and it works for what I have done up to the moment.

>I'm looking for an alternative to Adobe to make PDF files. We used to use Adobe 5.0 print driver to make the PDF by setting a registry setting. Now in 6.0 this doesn’t work and I’ve tried to change the program to edit the new registry values but they are in a different place for NT 4 vs. XP and I can’t even get it to work on Citrix 2003. So I’m fed up with Adobe 6.0 and looking for a different print driver that can be controlled by a developer to output the result to PDF. Has anyone used a different print driver that they created PDF files from programmatically?