is it possible to export .mdx and .mdl files? is it possible to export to .mdl or .mdx files?
If yes, tell me the exact way please. Me and my friend are working on a Warcraft map, but Warcraft only imports .mdx or .mdl files and blender can't export this kind of files.
You could try the Blender-MDL addon.

It is also listed in official import/export extension section of the documentation at wiki.blender.org