Combine sun-dried tomatoes, Romano cheese, basil, pine nuts and garlic in food processor. With machine running, gradually add olive oil and process until smooth paste forms. (Can be made prepared 2 weeks ahead. Cover and refrigerate.)
Cook linguine in large pot of boiling salted water until just tender but still firm to bite. Drain, reserving 1/2 cup cooking liquid. Combine 3/4 cup tomato pesto with reserved cooking liquid in same pot. Add linguine and toss over medium-high heat to coat, adding more pesto, if desired. Season to taste with salt and pepper and serve.