We recently ran a blog post on dealing with the costs of cancer. here is the link: http://blog.whatnext.com/blog/peer-perspectives/9-tips-for-dealing-with-the-financials-of-cancer
There are a lot of ideas in here that might be able to help. Also contact the American Cancer Society's hotline (number should be listed to the right on your home page). And be sure to click on resources above.
Please keep us posted.