STIR TOGETHER GRAHAM CRACKER CRUMBS, 1/4 CUP SUGAR AND MELTED BUTTER. FIRMLY PRESS CRUMB MIXTURE INTO BOTTOM AND UP SIDES OF A 9-INCH PIE DISH. BAKE AT 350 DEGREES FOR 8-9 MINUTES. REMOVE FROM OVEN AND COOL FOR 30 MINUTES.
USING MIXER BEAT CREAM CHEESE UNTIL SMOOTH. ADD VANILLA EXTRACT AND POWDERED SUGAR; CONTINUE MIXING UNTIL SMOOTH. IN SEPARATE BOWL WHIP CREAM UNTIL SOFT PEAKS FORM. FOLD WHIPPED CREAM INTO CREAM CHEESE MIXTURE AND CAREFULLY SPREAD IN BAKED CRUST. CHILL FOR 1-2 HOURS.
IN SMALL SAUCEPAN WHISK TOGETHER CORNSTARCH, 1/4 CUP SUGAR, STRAWBERRY GELATIN, WATER AND LEMON JUICE. COOK OVER LOW HEAT WHISKING CONSTANTLY UNTIL THICKENED. REMOVE FROM HEAT AND ALLOW TO COOL FOR 10-15 MINUTES. ADD STRAWBERRIES TO THE PAN AND STIR TO COAT. LAYER GLAZED STRAWBERRIES OVER THE PIE. REFRIGERATE UNTIL READY TO SERVE.