Macro for sharpening images

I have this document with around 400 images, small size and low resolution. I used Woxxoms Bitmap downsample macro in this package and that wortks great. Now I need to sharpen these images a bit and I tried recording a macro and that works, but it only applies on one image at a time, whereas I need it to be applied to all images in the document (so I don't have to apply it 400 times). How can I make this happen? Or do I have to buy this set of macros?