Karen:
I am posting the recipe below as I found it...I realize it is not exactly what you wanted. The "dressing" part looks very good to me. I, too, am a fan of imitation crab. I think imitation crab would work great in this recipe. I would also use the small pasta shells. I hope this helps.

And, there are so many clever people who visit these message board, I encourage you to keep checking back. I am sure others will have additional ideas.

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* Exported from MasterCook *

CREAMY SEAFOOD PASTA SALAD

Serving Size : 1
Categories : Appetizers Salads

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
12 oz Medium shell pasta
1 lb Mixed seafood(scallops,squid
Shrimp, and/or firm white
Fish fillets) cut into 2"
Pieces
1 1/2 c Diced sweet red peppers
1 c Diced sweet green peppers
3/4 c Diced red onions
3/4 c Thinely sliced carrots
1/2 c Chopped green onions
-----DRESSING-----
1 c 2% yogurt
1/3 c Light mayonnaise
1/2 c Chopped fresh dill or
1 1/2tbsp dried
2 tb Lemon juice
2 ts Crushed garlic
1 t Dijon mustard

1. Cook pasta in boiling water according to package instructions or
until firm to the bite. Rinse with cold water. Drain and place in
serving bowl.
2. In medium nonstick skillet sprayed with vegetable spray, saute
seafood just untill cooked, approximately 3 minutes. Set aside.
3. Add red and green peppers, onions, carrots and green onions to
pasta. Add seafood.
4. Make the dressing: In small bowl combine yogurt, mayonnaise,
dill, lemon juice, garlic and mustard. Pour over pasta. Toss and
chill TIPS: firm fish filets can be used with or instead of mxed
seafood. Be careful not to over cool. Grilled fish instead of