ok so its been a pain in the ass to find this waterproofing stuff but I have finally found something that just might do the trick. The stiff is called Blue Seal Waterproofing membrane. I'm gonna use it on the floors and shower walls.
I found a way to get the mapelasic but the guy at the tile store was going to charge me some rediculous price like $130 for a 1 gallon. I hate how these guys treat you when your not a contractor(pisses me off so much). anyway I'll post back after I use the stuff.
Thanks for the help.
Also my boss is a pro tiler and I asked him about what he uses for waterproofing and he said they don't use anything?? He says that he just makes sure he fills the gaps in the cement board with the tile adhesive. He said teh showers last a very long time....20 or 30 years(i'm not sure about that though...but who keeps a shower around for that long anyway right!)I'm just glad that my bathroom was done right adn with indistructable material. Now I want to keep that going for the next guy.