Featured Slider Again

Hi I went through this forum and I see you have instructed people how to do this but I am like another user. I  can't change the images in the slider to my own images. I can do everything but the last step. I put the name of the featured post in the space next to Featured Slider Post #1. And then hit save- but it doesn't save, well the image doesn't change and when I go back to that field after saving there is nothing in it. Is the name of the post what I am meant to enter in that field? Its a great theme. I really like it but if I can't change the slider images- its no use to me Thanks