You can see it on the birthdiaries.com site...http://www.birthdiaries.com/diary/29vbirth.htm
As far as heat goes...we were just planning to add hot water as needed. We didn't end up needing to since I had a very fast labor and I was actually only in the tub for about 40 minutes. We were planning to just siphon the cooler water out as needed as well.
DH emptied the pool, only he couldn't get the siphon going so he sucked on it to get it started...lol...my mom and I were laughing so hard...what a guy!
I was worried about the weight of the pool as well, since we were planning to do it on the second floor of our apartment. We already had a waterbed, so I actually ended up calling the waterbed store to ask them how many gallons were in a queen size waterbed, how much that would typically weigh, and what the building regulations were as far as withstanding weight per square inch. We figured it out over the phone...he told me I was his first call for something like that, and he was glad to help me.
To prepare the floor, we just went with the plastic sheeting from the home improvement store and threw towels over it so we wouldn't slip on it when we were wet.
We bought, and I've seen most people recommend, the 60 inch pool. Ours is made by Intex and it was around $20.00. The sides are really sturdy, and I highly recommend an electric pump to fill it up. We tried it with a foot pump at first and it took forever...actually we gave up...lol. You can get one for around $15, I think we bought ours at Target.
Good Luck and happy waterbirthing!