If you receive a Quark document that tells you it needs Pasteboard to open - and - you do not own Pasteboard, Markzware provides free Pasteboard eliminator software at
http://www.markzware.com/freebies/
Sorry, currently there is no Windows version of this software, so you will need to find someone with a Mac to help you out. Actually, they have never had a Windows version of Pasteboard.
http://www.markzware.com/blogs/hey-open-quark-doc-pasteboard/2009/03/02/
Have a nice day,
Graphicstart