Brent, If the Alpha map is the same size as the image I don't know what the problem would be; I should import correctly. If they are different sizes, open the picture in your paint program, import the alpha and make adjustments in the paint program to fill in any mis-alignments. Save off the new Alpha and everything should be hunky dory. If you've done all this, post a pict of the shader tree and we'll see if anything stands out.