2 Qestions about QPrinter

[Dark_Tower]

Hi all, I need to print a sequence of images (about 500 images, one per page) in a PDF format file. My questions are:
1) I'm using Windows XP, could you suggest me a good driver to print in PDF format that works good with Qt?
2) Do you suggest me to start a thread to do the printing (if it's possible)? (in this case I could show on the main loop a progress bar with the state of the printing and other things without blocking the cpu...)

Thanks.