Melt butter in large skillet over med-high heat. Add shallots & garlic, saute until soft, but not browned (2-3 min). Add wine and simmer until reduced to about 2 tsp (~ 5 min). Add cream and tarragon and simmer, stirring occasionally, until reduced to 1 1/2 cups (~ 10 min). Stir in snow peas, ham & tomato and cook until heated thru (3-4 min). Mix in 1/2 cup parmesan cheese, salt & pepper. Combine both fettucines in large serving bowl. Pour sauce over and toss. Sprinkle with additional parmesan cheese.