At this point I will assume you have some programming experience of the Ogre open source 3D graphics engine. A crash course in Ogre3D programming is a little beyond the scope of this book but there are plenty of great books and tutorials to be had.
Before we get started compiling a simple scene and viewer, we will need to install the OgreGrome SDK which at time of writing can be downloaded from:
http://www.quadsoftware.com/download.php?file=grome2ogre/OgreGrome_1.00.27.exe
Alternatively, visit Quad Software's website and navigate to "GROME – Support for Engines and External Formats". There you will find links to any updated SDKs and plugins.
Another requirement is the OgreCOLLADA application (or some other tool) that converts COLLADA models used by GROME into the .mesh format required by Ogre3D.