http://blogs.technet.com/james/archive/2007/05/23/rendering-xps-in-silverlight.aspxA partner I know is currently looking to render XPS and now a very clever chap inside Microsoft ( via Mike Taulty ) has been playing around with doing it in Silverlight . The app is very cool and has nice controls to boot. Bear in mind it's just a proofen-GBCommunityServer 2.1 SP1 (Build: 61025.2)