I have not messed with the seeds, to be honest.
I did, however, get my pool built: http://gorzek.com/minecraft/images/index.php?start=89
The only things I have left to do with it are to clean up the blocks I put inside it (so I'd only have to lay one layer of water, then break the blocks so it would flow down) and put torches underneath for light. If I thought I could find enough Lightstone I'd light it with that. Ah well.
You guys can look at the rest of my Minecraft pictures at that link, too. I'm going to start keeping them all there, and set up an automated script to upload my current world once a day.