Chemotherapy Followed by Biological Therapy in Treating Patients With Stage IV Melanoma That Cannot be Treated With Surgery

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Biological therapies such as interleukin-2 and interferon alfa stimulate a person's white blood cells to kill cancer cells or may interfere with the growth of cancer cells. Combining chemotherapy with biological therapies may kill more tumor cells. PURPOSE: Phase II trial to study the effectiveness of temozolomide followed by sargramostim, interleukin-2, and interferon alfa in treating patients who have stage IV melanoma that cannot be treated with surgery.