HERE IS THE STEP BY STEP GUIDE HOW TO USE GRADIENT TOOL IN AI CS4

FIRST CREATE AN EASY SHAPE BY CLICKING ON SQUARE OR ELIPSE IN LEFT TOOL BAR IN FOURTH ROW
THEN GO TO THE ART BOARD AND DRAW A SHAPE BY HOLDING MOUSE LEFT BUTTON (ANY SHAPE SUCH AS ELLIPSE OR CIRCLE ETC)
NOW GO TO THE LEFT TOOL BAR AGAIN AND SELECT THE GRADIENT TOOL IN TENTH ROW
THEN GO TO THE LEFT SIDE OF AI CS4 AND FIND THE GRADIENT WINDOW (IF YOU DO NOT FIND THE WINDOW THEN GO TO THE TOP OF AI CS4 AND CLICK ON THE WINDOW TAB )
CLICK ON THE GRADIENT SLIDER
AN GRADIENT DETERMINER WILL APPEAR ON THE OBJECT BY WHICH YOU CAN ADJUST THE DIRECTION OF GRADIENT AND LEVEL OF GRADIENT BY ROTATING AND SLIDING .
YOU CAN CHANGE THE COLORS BY DOUBLE CLICKING ON THE SLIDER POINTS AND YOU CAN CREATE EXTRA COLOR SLIDER BY CLICKING ANYWHERE ON THE SLIDER .
YOU CAN CHANGE THE GRADIENT TYPE FROM UPPER LEFT CORNER