In New York, a new resource may help put an end to the confusion among emergency and general health care providers regarding HIV post-exposure prophylaxis (PEP) administration. The resource is a recently developed "widget" -- an easy-to-use, computer-based tool -- that advises health professionals on best practices for giving PEP. In this interview, Antonio Urbina, M.D., of St. Vincent's Medical Center describes the widget's functions while detailing the fine points of PEP.