Phase A of Arm 1 is one dose of herceptin followed by an MRI of the affected breast and a second biopsy 1-2 weeks following this dose. Phase B of Arm 1 begins on week 3 and ends on week 14 and involves weekly injections of herceptin and navelbine. Surgery will take place a minimum of 3 weeks after the patients last dose of herceptin and navelbine.