Ok Tina, first what sort of floor do you want? How about polished wood? Right fin a a photo of some wooden panneling. Select your plane, then in surfaces Defuse, click on jpg. This will allow you to use the wood photo (or any other material you have a photo of) still in surfaces, set glossyness to 78% or there abouts and reflection to around 50% (you will most likely have to tweek thesr numbers as I'm at work and trying to do this from memory)lol. Make sure you have some light pointing down at the floor and hopefuly you will have something like a polished wood floor!
If it dont work, let me know and I will try and sort something for you tomorrow when I get home :)

If it ain't free, I can't afford it.