The objective of this study is to determine the effectiveness and cost-effectiveness of two interventions aimed at reducing barriers to blood pressure (BP) control in an indigent and African-American population. Specifically, we will conduct a randomized controlled trial comparing BP control using either: (1) reimbursing patients for filling prescriptions (reimbursement arm); (2) a computer-based behavioral intervention (behavioral arm); (3) both the reimbursement and behavioral arms (combined arms); or (4) neither.