MIX first 4 ingredients until blended. Arrange half the ladyfingers on bottom of 9-inch square dish; brush with half the wine mixture. Let stand 3 min.
SPOON half the ice cream over ladyfingers in dish. Cover with remaining ladyfingers; brush with remaining wine mixture. Top with remaining ice cream. Sift cocoa powder over ice cream.
FREEZE 3 hours or until firm. Remove from freezer 10 min. before serving; let stand at room temperature to soften slightly.