In small saucepan, melt butter. Stir in flour. Cook and stir 1 minute. Stir in milk, chicken broth, and basil. Bring to a boil, stirring constantly, until thickened; keep warm. In 5-quart saucepan, cook fettuccini according to package directions; drain and return to saucepan. Stir in SPAM, vegetables, and sauce. Cook and stir over medium-high heat until thoroughly heated. Stir in Parmesan cheese.