I had a problem printing a report from Access to pdfcreator containing barcodes. I use Code 128 C tall to generate the barcodes on my report. Converting the output of the report to PDF turned the barcodes into rectangles. It seems that if you go into page setup/page/printer/properties/advanced/postscript options/truetype font download option and you change that to bitmap or outline it works. At least for me.