I can't see any conflict between BDSM and Christianity (Note however, I am not a Christian). From my limited knowlege of the bible, Ruth seems to have been a subbie.
Unfortunately I did have the URLs, but I do know that several BDSM websites and forums that exist, and in the MSN groups, there are several dedicated to this.
You may also want to look at this page:
http://www.leathernroses.com/general...istianbdsm.htm
Anyways, welcome to the BDSMLibrary, and I hope you enjoy it here.
Brosco