I've attached a sample file (SW2011 as well as a parasolid) that I'd like some help with.  I've got a contour made up for a part I'm currently working on and trying to manufacture, but I can't figure otu a way to round off the edges of the cuts I've put in.  A standard fillet along the edge of the cutout just doesn't seem to look very good, and won't manufacture easily.

Can anyone give me some ideas or an example of how to round off this edge?  A swept cut might work, but I can't figure out a way to get a good looking radius to run around the profile.