Testing the wrapper binary examples:
1- Go to folder: C:\develoment\osgnewton\bin\release
2- You will find a series of compiled demos. Try some or all them before you try anything else.

Building the library:
1- DownLoad Newton SDK 3.13 (minimum)
2- Open visual studio 2010 solution in folder: 
..\newton-dynamics\packages\projects\visualStudio_2010\build.sln

3- You will need to set few environment variables: 
Say your open scenegraph SDK is installed in folder: 
C:\development\OpenSceneGraph-3.0.1\vs2010

and the newton SDK is installed in forder: 
C:\development\newton-dynamics

these environment variables should point to:
OSG_SDK_PATH=C:\Development\OpenSceneGraph-3.2.1
OSG_SDK_BUILD_PATH=C:\Development\OpenSceneGraph-3.2.1\projects
NEWTON_DYNAMICS=C:\development\newton-dynamics

4- in CMake drag file C:\develoment\osgnewton\CMakeLists.txt to the Cmake GUI

5- Select visual studio 2010 compiler or better and click config and then generate solution

6- Now you can open the solution with Visual studio 2010 and build the wrapper and all demos.