If you haven't already done so, I'd recommend posting your family tree on our pedigree forum. There are already a lot of pedigrees posted there, and you may find a researcher who shares some common ancestry (or a researcher may find you).
http://www.wfnforum.net/index.php?topic=3405.0All the pedigrees are sorted and organized onto the official family website at:
http://www.worldfamilies.net/surnames/b/birmingham/Also, here is a direct link if you want to go ahead and order a DNA test:
http://www.familytreedna.com/surname_join.aspx?code=J88012&special=TrueAnd, if you want more information, there is a lot at the WorldFamilies.net website. I recommend starting at our Frequently Asked Questions page:
http://www.worldfamilies.net/faqs.html