Hi, if
http://www.dasmoon.com/ is the original domain that you have in your public html area & you have added a subdoman? Then
www.blackhawksite.dasmoon.com is the correct way to get to the sub domain. You should be publishing your pages to public_html/blackhawksite/ for the subdomain
If you wanted to get to the pages as
www.blackhawksite.com You would of had to of purchased a new domain & made this work using the add on domain facility & not the sub domain. I cant off hand see what BV10d would have to do with this.