Hey Thanks!. For what i have seen XODE doesn't include Mesh Data, only body, geoms and Joints. I see this as a very good thing, because so you make a pure ODE data format.
In my editor i have an option to load meshes for the bodies, so i think this won't be exported. I see that trimeshes are supported by XODE, so i plan to export them as well.
An Importer is a very good idea, but this is more difficult, because i don't have am xml parser in Blitz3D. Anyway i will see what can i do

If you have any questions or suggestions please ask me!
P.D: John has made an XML Parser for Blitz3D! Mmm, working on the importer too then!