Boil the pasta according to the directions on the package. Be careful NOT to overcook your pasta. When pasta is done (I suggest al dente), strain, and put in bowl. Let the pasta chill in the refrigerator for about 10 minutes, or until the pasta is slightly chilled. Add the tomatoes, cucumbers, Italian dressing, and red pepper flakes. Toss throughly and serve, or chill until ready to serve.