From Corel Draw, click on Edit Bitmap so that it opens in Photo Paint.
Click on the object and go to Mask/Create/Mask from Object
Then click on Mask/Mask Outline/Feather, you can set the feather amount from here
After that, go to Mask/Mask Outline/Smooth, here set the smooth radius
Right click on the object in the object docker and click on Create Clip Mask/From Mask
Then click save to update the image in Corel Draw, this should then give you a nice smooth feather :)
Andy Carolan at 19:39 (GMT -5) on Mon, Apr 6 2009]