It's been a while since I used Pages, but the last time I used it, I dragged and dropped a photo into a blank document and there were options to add nice borders to the photo.
Specifically, I added an effect which made the photo look like it was peeling off the page on the left and right side, and there was a shadow underneath each corner giving it a 3d appearance.
I can't for the life of me find that feature in Pages (using Page '09).
Best Answer
I'm not sure it's the same effect you're looking for, but to apply different borders in Pages I followed these steps:
Inspector
by holding CMD+IGraphic
tab:Stroke
menu and choosePicture Frame
from the drop-down menu.Scale
slider.