I made the recipe last week when Bill and Jessica came over for dinner. And my mom made this a lot for pot lucks, etc... I'm posting this for you Jess.
Note: Modify as you wish. I change up the veggies based on what I have on hand.
1 lb spaghetti
1/2 bottle of Italian Salad Dressing
McCormacks Salad Supreme Seasoning (I haven't had great luck finding this in NYC and had my mom send me some. The ingredient label says: grated romano cheese, salt, sesame seed, poppy seed, paprika, celery seed, garlic, black pepper, and red pepper. I would use grated cheese - parm if you don't have romano, salt, garlic, paprika, and black and red pepper if you have to make your own)
Mix the veggies, dresssing, and seasoning with cooked spaghetti. Toss and refrigerate for at least an hour before serving.