1. Combine first 6 ingredients in a small saucepan. Cook over medium heat until mixture begins to boil, stirring often; remove from heat, and set sauce aside.
2. While sauce cooks, cook pasta according to package directions, omitting salt and fat; add snow peas to pasta the last 3 minutes of cooking time. Drain and place in a large serving bowl. Add carrot and sauce, tossing to coat.