Attached Link: http://users.pandora.be/roobol/tutorials/framestutorials.html

Roobol has a tutorial which shows how to make a seamless texture even if you don't have a filter that cuts the photo up for you. I've tried it and it does work but now I use Photoshop's offset filter as described by others above. Still, I have a fascination with seamless textures, enjoy making them when I've nothing else more coherently creative to do and Roobol does fantastic artwork using photographic textures that takes my breath away. Kathy