OUTLINE: This is a multicenter study. Patients receive docetaxel IV over 30 minutes weekly for 6 weeks plus trastuzumab (Herceptin) IV over 30-90 minutes weekly for 8 weeks. Treatment continues every 8 weeks in the absence of disease progression or unacceptable toxicity. Patients are followed monthly for 3 months, every 3 months for 9 months, and then every 6 months thereafter.