Oh...since you just want the sword to glow on the image, you WILL have to put the sword on a new layer (I am assuming that the whole image is one layer because it is a rendered image from bryce). Select the sword with your favorite lasso tool. Then copy the selection and then paste it again, right on top of the old sword. This will make a new layer with just the sword on it. Now you can adjust the glow using the effects. -Adam