No Bake Orange Cookies

4 cups Graham cracker crumbs
1 cup Confectioner's sugar
1/3 cup Frozen orange juice concentrate (thawed)
1/4 cup Light corn syrup
1/4 cup Margarine (melted)
1 cup Walnuts (chopped finely)
Confectioner's sugar (optional)

In large bowl, mix graham cracker crumbs, confectioner's sugar, orange juice concentrate, light corn syrup, margarine and walnuts. Shape mixture into 1 inch balls and roll in additional confectioner's sugar (this is an optional step).