IF I UNINSTALL & REINSTALL ITUNES WILL I LOSE ITUNES LIBRARY AND PLAYLIST

THANKS
I BACKED-UP MY ITUNES LIBRARY TO A EXTERNAL HARD DRIVE JUST IN CASE AND THEN I FOLLOWED THE UNINSTALL AND REINSTALL PROCEDURES IN ITUNES HELP. THEN I FOLLOWED THE RECREATING YOUR ITUNES LIBRARY AND PLAYLIST. IT ALL WORKED JUST FINE BUT I STILL GET THE MESSAGE EVERY TIME I START ITUNES. "THE REGISTRY SETTINGS USED BY ITUNES DRIVERS FOR IMPORTING AND BURNING CD'S AND DVD'S ARE MISSING PLEASE REINSTALL ITUNES." DOES ANYONE HAVE ANY SUGGESTIONS.