oldskoolPunk's advice is probably sound with Poser. 

If you want very precise beveling with good quad based mesh (may not apply to your needs here), one way is to use Loop Subdivide and then use Slide Edge to move new edges close to "beveled" edges. I'm not very good at this but I have seen some Blender videos which show the power of these tools... Can't remember now where I have seen them though.