Listen to your instructors they know the course the proper lines and want you to have a good experience while keeping you and your car in one piece. You didn't say if you are driving an S197 or Fox body. If a S197 leave the TCS on. Also check out this website
www.dfwautocross.com . Come out and autocross turn the TCS off then. I currently run in the SCCA Texas Region series. It is all I have time for now.
Cheers,
Chris Parker
SCCA Solo II A/P Regional Champion 1981
SCCA Regional/National Club Racing Licenseholder 1981-92