Assign material to j3o?

Blender 2.65, Nighlty SDK…

i’ve got trouble importing a model into SDK

it started with the SDK provided Ogre-Installer wich didnt work at all (stopped dead in the middle of the vertices-taggroup and didnt even close the file) so i downloaded the latest version from the of the python-skript, wich at least works with blender. But it doesnt export my material, renames my animations with MyAnimation and doesnt seem to notice that my pathes are composed of upper- and lowercase-letters ^^ OK - that all can be ignored and fixed by hand…

What i cant fix is the material itself. I have a Foo.mesh.xml and a foo.material (that i had to manually rename to uppercase starting letter…) but as the exporter just exports the following material-file…
material missing_material
receive_shadows off
ambient 0.1 0.1 0.1 1.0
diffuse 0.8 0.0 0.0 1.0
specular 0.5 0.5 0.5 1.0 12.5
emissive 0.3 0.3 0.3 1.0

i thought i could somehow create my own material-file and just copy it’s contents into the provided file. I also renamed missing_material with a better name in the file and in the *.mesh.xml.

The above file looks a little bit like a j3md-file. Guess i already have my j3m-file ready, can i just convert the mesh to j3o and assign my own material? if yes… how? in the properties of the j3o, i cant see any hint about the to-use material.

Ok, i should add, i just managed to do it, but i dont know what i did :-Δ … suddenly, a rightclick provided additional settings and my mesh showed faces, then i could change the material. but now, i cant reproduce the steps needed… I reopened the j30 file and tried all combinations with RMB, LKM, MBM, shift, alt and ctrl to no avail … how does it work??