PCS 1.x can do smoothing....
oh.. and Blender is officially anti-supported by PCS because of the problems it causes (it exports bad geometry constantly)
im sure it can handle smoothing, on the other hand i dont think truespace can. pcs only seems to interpret 2 settings, smooth and fauceted. i could not for the life of me get the hard lines distinctive of max smooth grouping. then i was converting the chimera, which had a number of different smoothing settings as materials, i couldnt get any hard lines yo apear. m pretty sure the correct smoothings were applied on the sections defined but the hard lines just werent there. i think the problem lies in the cob/scn format. theres probibly only one normal per vertex rather than one normal per vertex per material. i am much, much more satisfied with the smoothing results i get through the max converter. i just hope pcs 2 remedys this problem, at least when using non-truespace formats.
