Immuno & Safety Study With 2 Formulations of DTPw-HBV/HIB When Given at Birth With Hepatitis B at 2, 4 and 6 Mths.Age.

Inclusion criteria * Administration of one dose of hepatitis B vaccine at birth. * A healthy male or female between, and including, 6 and 12 weeks of age at the time of the first DTPw vaccination. Exclusion criteria * Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period. * Chronic administration of immunosuppressants or other immune-modifying drugs since birth. * Planned administration/ administration of a vaccine not foreseen by the study protocol within 30 days before the first vaccine dose or planned administration during the study period with the exception of oral polio vaccine hepatitis B vaccine for the Triple Antigen + Hib group. * Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination (no laboratory testing is required) * Administration of immunoglobulins and/or any blood products since birth or planned administration during the study period. * Bacille Calmette-Guérin (BCG) vaccine given after the first 2 weeks of life. * Previous vaccination against diphtheria, tetanus, pertussis and/or Hib/History of diphteria, tetanus, pertussis, hepatitis B and/ or hib disease.