Converting MESH files to XML files and importing them into Blender 2.49b

Currently, I’m trying to take a .Mesh file and convert it to a .XML file and import it into Blender 2.49b with OgreXMLConverter. Simply put, I have no idea how to do this. I know you have to somehow use the Converter to open the .Mesh, where it will automatically turn it into a “.Mesh.XML” from what I’ve heard. You must also use the Converter in conjunction with Blender, which also needs some sort of plugin to be able to recognize the .XML files. Is there anyone here who knows how to do this, or has done it before?