Custom Stamps

I'm creating custom stamps in Acrobat 9 and it keeps rotating the image so that it comes out 90 deg clockwise.  I tried rotating the original pdf image 90 deg counterclockwise and it still comes out with the stamp rotated 90 deg clockwise (i.e. 180 deg from original).  All of the videos on the web show no rotation of the selected image.  What setting is screwing up the works for me?