After Taxol treatment, all participants will receive the drugs fluorouracil, cyclophosphamide, and epirubicin (FEC) through a plastic tube in a vein. Fluorouracil will be given intravenously (IV) as a short infusion on days 1 and 4. Cyclophosphamide will be given intravenously as a short infusion on day 1. Epirubicin will be given IV on day 1. This FEC treatment will be repeated every 3 weeks for a total of 4 treatments. Participants will continue to receive Herceptin weekly during therapy with FEC.