Patients receive oral temozolomide on days 1-5 and oral lomustine on day 1. Treatment continues every 28 days, if blood counts have recovered, for 2 courses in the absence of disease progression or unacceptable toxicity. Patients then undergo radiotherapy on days 1-5 weekly for 6 weeks. Patients continue the same chemotherapy regimen for up to 6 more courses beginning 4 weeks after completion of radiotherapy.