Ok.. boil the pasta, then drain. In a large bowl, season the chicken by tossing with the cajun seasoning. Meanwhile, in a large skillet.. saute' the chicken over medium heat in butter (about 7-10 minutes). Reduce heat and add the green onions, whipping cream, tomatoes, basil, garlic, salt and pepper. Heat through. Mix in the linguine and toss. Sprinkle with parmesan cheese.