Taz, so very sorry to hear about your condition.
I can relate to some of it, as my cancer is incurable and it is a lymphoma that lives in my immune system.
I had an autogenetic stem cell transplant of my white blood cells to try to rid myself of the cancerous cells. It did not work entirely, but knocked it down from level 3 to level 1 (which is more treatable with chemotherapy). So far I am in remission, with the last treatment in april 2010.
They can also do an allogeneic transplant, where the white cells come from a compatible donor (usually family). You would have to take suppression drugs to keep them new cells from attacking you -- so that sounds like the fix you are already in.
Stem Cell Transplants: A Lifesaving Treatment for Cancer Patients
Too bad stem cell research has been so (expletive deleted) handicapped for the last decade . . . as that could offer a solution that would not need the suppression drugs.
Wish I could help.
Paul
Edited by RAZD, : link