I was diagnosted with BH also, earlier this year. I consulted with a prominent gastroenterologist/microbiologist in Sydney, Australia (I do not live in Australia --they are fine with consulting with you over the phone). Treatments have come a long way since flagyl etc. and this particular gastroenterologist prescribes a combination of 3 Antibiotics over 10 days (I had no side effects except nausea). They have had a lot of success with the treatment. For me, I have to say it didn't do the trick--this is because I think it wasn't the BH that has been causing my problems, but as they said, I wouldn't know for sure until I had treated it. If you're interested in looking into this further, please let me know and I'm happy to give you more details. If you are, it's probably easier if we get on email direct rather than in this forum.
In the meantime, check out www.badbugs.org and www.cdd.com.au