Rum Balls

1 cup (6 oz. pkg.) semi-sweet chocolate pieces
1/2 cup sugar
1/3 cup rum
3 tablespoons light corn syrup
2 cups vanilla wafer cookies -- crushed
1 cup nuts -- ground
powdered sugar

Melt chocolate over low heat. Remove from stove. Stir in sugar, rum, and corn syrup. Stir in wafers and nuts. Shape into small balls. Roll in powdered sugar. Store in airtight container.