3. Patients must have a diagnosis of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) bipolar disorder and must currently display an acute manic, hypomanic or mixed episode as determined by DSM-IV criteria. This includes the following diagnoses: 296.4x, Bipolar I Disorder, Most Recent Episode Manic; 296.6x, Bipolar I Disorder, Most recent Episode Mixed; and 296.0x, Bipolar I Disorder, Single Manic Episode, Bipolar II Disorder, Most Recent Episode Hypomanic.