I got newton working recently with the irrlicht wrapper (developed by the awesome frank dodd) and released the source. I set up some forumns to support people useing the code from it and I hope it gets people into usieng newton for their game.
you can also download it from their with the link to file front and theres an alternate version that people can include as a header that allows them use of some important subroutines with a rough use guide. I am working on getting more functionality like player intergration with newton, physics particals and explosions and stuff. at the moment it's just load a map, load objects and then you can add forces to the objects and thats it but I am adding way more.