MIX juice and ginger in medium saucepan. Bring to boil on medium-high heat. Add to gelatin in large bowl; stir at least 2 min. until gelatin is completely dissolved.
REFRIGERATE 1-1/2 hours or until thickened (spoon drawn through leaves a definite impression.)
STIR in fruit and walnuts. Refrigerate 1 hour or until set.