Win2PDF creates PDF files from any Windows NT, Windows 2000, Windows Server 2003, Windows x64, Windows XP, or Windows Vista application. It installs as a Windows print driver, so all you need to do is to print from any application to create a PDF file. The Win2PDF Pro version has all of the features of Win2PDF, but it also includes support for password protecting PDF files with 40- or 128-bit encryption, and applying a watermark.

Features
Windows Vista, Windows XP, Windows 2000, Windows NT, Windows x64, and Windows Server 2003* support (If Terminal Services are enabled, the Win2PDF Terminal Server Edition would be required).
Create PDF documents from any Windows application that supports printing.
Merge PDF output to the beginning or end of an existing PDF file.
Web links beginning with "http" or "www" are automatically converted to PDF hyperlinks.
Integrates with Outlook and Outlook Express e-mail clients to automatically attach PDF files to e-mail messages.