Smoothing some of a mesh
 

I've got a polygon sword, and I want to smooth the handle, but not the rest. Selecting the faces and hitting smooth doesn't work. Do I need to detach the handle, smooth it, then retach it (and how would I do this)? Or is there an easier way?

Selecting the faces and hitting smooth should have worked or did you get an error?

Selecting the faces, then Polygons -> Smooth works for me.

Polygons > Smooth smooths the whole thing.

Edit: Fixed it, nm. Thanks anyways!