PS to PDF is a windows application which can offer the best performance available to provide speedy conversions from PostScript and Encapsulated PostScript to Portable Document Format (PDF). It supports to convert multiple PS/EPS files into one PDF file. Set encryption options to output PDF files. It doesn't depend on Windows Printer Driver technology or any other products.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.