...are there any?? ..if so, where??

 

I Auto-X...there should be dozens of clubs
search the internet for Auto X Texas and you'll find other Auto-Xer's...

here is one result from a quick search:
http://www.spokes.org/

oh and there is the SCCA
http://www.autocross.com/texasregion/

then you should go watch and chat with other Auto-X and see which group you want to join...
let us know what you end up doing