Hello,
I have taken some pictures using a graduated filter. With some of these pictures I screwed up where I placed the graduation line of the filter in the sky. I would like to change how this graduation appears.

An example of a photo can be seen here:
http://beta.zooomr.com/photos/15313@Z01/465189

What tools/techniques are best used to accomplished this task? I would appreciate any tips or comments.

Thanks!
Doug