XPS documents
This feature is included in the following editions of Windows Vista:
An XPS document is a new Microsoft document format that you can use to archive content in a standardized format or publish content in an easily viewable form. You can also use this format to ensure that no one is able to edit your original work.
Download the XPS Viewer for Windows XP
XPS document creation
With Windows Vista or Microsoft .NET 3.0 installed on Windows XP, you can easily create XPS documents from virtually any application using the Microsoft XPS Document Writer.
XPS Document Writer
Whether you are working with documents in Microsoft Word, photos in Microsoft Paint, or a web order form being viewed in Internet Explorer, if the application has the ability to print, then the Microsoft XPS Document Writer will be available through the Print dialog of the application.