PDFCreator can help you with many tasks around converting files to PDF
Create PDFs from just about any program that prints using Windows printers
Create documents in the following formats: Portable Document Format (PDF, PDF/A, PDF/X), PNG, JPEG, TIFF and TXT
Combine multiple documents into one PDF
Password protect and apply up to 256 bit AES encryption to your PDF documents
Automatically save PDF documents with current settings without being prompted for information
Send the created files by mail
Add watermarks and stamps to the documents
Run custom actions after converting the files to make PDFCreator suit your needs
And much more!