Rationale: Surgery and radiation are often used as treatments for brain metastases, or tumors in the brain that originate from other parts of the body. It is currently unknown whether patient survival or time to progression would experience additional benefits through the addition of chemotherapy. Previous research does appear to suggest that a chemotherapy regimen may improve outcomes of patients with brain metastases previously treated with radiation. The current study further evaluates this research question by providing patients with recurrent or symptomatic residual brain metastases with carboplatin and temozolomide, two chemotherapy agents. Temozolomide has demonstrated clinical antitumor efficacy against malignant gliomas and has been tested with some efficacy against several other types of cancer. This drug appears to have less adverse effects compared to other commonly used cancer drugs. Recent research indicates that temozolomide also has some efficacy against brain metastases. In addition, previous research indicates carboplatin's lack of severe toxicity in patients with this disease.