Speaking from MM experience, Stage III, there are no stand alone Chemo or Rad treatments that work. Immunology is having the best current results.
If you're Stage 3 or 4, check out
Melanoma Home Page - National Cancer Institute
Dr. Steven Rosenberg heads the Immunology Dept (he's also Chief Surgeon @ NCI). His treatment with TIL cells has had great results. He is also treating lymphoma's with TILs.
NCI Cancer Bulletin for May 1, 2012 - National Cancer Institute
If accepted for treatment at NCI, all services are free.