Mesh won't smooth

I am importing some models from MAx in 3ds format. The attached picture shows this wheel and I just cannot seem to get it to smooth. I’ve tried the Smooth button and the smooth modifier, but neither seems to make any difference in the rendered file.
I’m running Blender 2.45.
Any ideas?


It was probably made using Spline Patches. If it’s all one Object Tab into Edit mode, select all verts, W >> Remove Doubles. If it’s seperate objects the join them with Ctrl-J first then remove doubles.


That seems to help alot, thanks Fligh!!