Easy fix.
To make the Full Tilt Poker Racetrack table transparent:
1) Go to this link:
http://images.wikia.com/poker/images/7/79/Transparent-794x547.png
(The page looks blank because it is supposed to be.)
2) Copy the file (right click, "save picture as") to a folder on your hard drive where you will be able to find it easily.
3) Find the file on your hard drive and rename the file "blanktableRT.png".
4) Copy (not move) this file to the folder in your Full Tilt Poker program folder with the path "Full Tilt Poker>Graphics>Table>Elements".
5) In the Elements folder, find the file named "tableRT.png" and move it to the same folder in which you have your first original "blanktableRT" file. Keep these files in case you ever want to switch them back.
6) In the Elements folder, rename "blanktableRT.png" to "tableRT.png".
7) Run Full Tilt and Viola! An invisible racetrack table! Keep in mind that if you use any of the included FTP racetrack layouts, FTP's green felt table is now invisible. Only the background will be seen. There are backgrounds available with tables drawn on them, if you prefer a table like I do.