Hi adolmakr. I don't have any answers of you, but I'm hoping to help you out with a few suggestions.
Here is a link to an overview of melanoma from the American Cancer Society. http://bit.ly/NFSEuG ACS also offers many resources, including a help desk (see number to the right and bottom of this page) where they might be able to give you answers to your questions, or tell you where you can go to get those answers.
Please keep me us posted and let me know what else I can do help.