I may write a seamless tutorial. I sort of started one on a thread over at 3dCommune. It's in the PSP forum. Lets see if I can steal it and paste it here on a new thread... There is a lot to it though this just touches the surface but there is lots of information even there so I'll go steal it and post it here. It's rough, this was just answering questions. It's not a complete tutorial it was just a reply to a few threads...