Preheat oven to 350F. Lightly coat a baking sheet with cooking spray. In a saucepan, bring wine and peach nectar to a boil. Add peaches and simmer until tender. Remove peaches and cool; reserve liquid. Cut peaches into thin slices.
Evenly divide sliced peaches, white chocolate and ginger among wrappers, placing ingredients diagonally in the center of each. Fold corners over filling and roll up like an egg roll. Seal edges with water so they stick together.
Sparingly brush rolls with vegetable oil and place on prepared baking sheet. Bake 10-20 minutes, until golden brown. Spoon reserved liquid over rolls, sprinkle with powdered sugar, if desired, and serve.