Hey.
Honestly, I think TOR would be your best bet for a FREE proxy solution to use with BMD. BMD accepts proxies in the form of address : port and I've setup TOR before to have one ip like so:
localIP : port
And then you can set it up in the control panel to switch your ip every so often... (it was called the tor vidalia bundle: hxxps://www.torproject.org/vidalia/) -- replace xx with tt
Other than that, I tried Hide My IP, but that didn't work for me...
Lastly, if you have a dynamic IP address and didn't know, you can restart your router/modem and your ISP will assign you a different IP address, but note your ISP will rotate through a certain number of ip addresses and stop giving you new ones if you try getting too many in a certain time period.
-Fr3shY