As far as I know, ANY properly-textured 3ds model will work with jpct. What kind of problem are you having? Are you having trouble exporting out of Blender? Look for models in 3d Cafe and turbosquid, both web sites have several free models available. Also, remember to add your textures to the TextureManager BEFORE you add your models to the world. Example of how to load your textures on jpct:
TextureManager.getInstance().addTexture("texture.jpg", new Texture("texture.jpg"));