Would you recoomend this project?
A virtual world browser based on Linden Labs' Second Life viewer. Modifications include OGRE rendering (supporting inworld 3D meshes) in addition to the original renderer, and a global avatar system.
You can download file releases of realXtend Viewer project from List of release files
System RequirementsOperating System: Windows NT/2000, Windows Vista, Windows XP
List of release files