You might try getting in touch with someone who's been down your path: www.dotsiecowden.net. Dotsie is a pro-racer, who's overcome her eating disorder, and even more. Plus, she's just a sweetheart. You can use the 'contact us' on her website. Since she's interested in training, she would be more than happy to help you with your issues. I've emailed with her about a bunch of things, and she's very willing to help.

Good luck, and keep us posted. Don't suffer this alone.