1) Follow package directions to cook fettuccine.
2) Stir in shrimp and vegetables before last 2 minutes of cooking time, heating until shrimp becomes pink in color and vegetables crisp-soft.
3) Drain the cooked mixture, when done.
4) In a large serving bowl, mix together yogurt, mayonnaise, basil and dill weed.
5) Mix pasta mixture with yogurt mixture and toss well to coat pasta evenly.