This research is being done because melanoma in the brain is very difficult to treat because it does not respond to radiation or to chemotherapy, such as temozolomide. One of the reasons for this is that the melanoma can make chemicals that signal the brain to provide new blood vessels for the tumor. The main signal is called VEGF. Bevacizumab is an antibody that blocks VEGF. The investigators want to see if the combination of bevacizumab and temozolomide will stop the melanoma from growing.