Cook in boiling water until firm to the bite (al dente).
Drain and set aside.
Meanwhile, prepare sauce.
Heat in skillet.
Saute" until mushrooms are golden.
Add and saute for 2 minutes.
Save only half the liquid and add clams and reserved juice to above.
Add and cook on medium heat approx. 5 minutes.
Add to above and simmer approx 5 minutes.
Season with salt and pepper.
Add to above.
Mix well and serve over pasta.
Sprinkle with more Parmesan and parsley as a garnish.