i dont know what your problem exactly is, since it's not clear from your post, but i'm guessing you want to make your mesh rotate around the world's Y axis?
Then you'll have update the position of your mesh.
You'll have to calculate the mesh's angle with the x or z axis, whatever you like, and then add the angle you want to it, then recalculate the x and z components.
This all can be done with a couple sinuses and cosinuses.
the global axis rotateY doesn't seem to work in 6.3.--I was looking for an easier way as I want to rotate several meshes at once relative to an arbitrary vertical axis- I've started looking at quaternions(rotate and translate from a matrix). any help would be appreciated.
mike