I want to find buprenorphine-administering drug rehabilitation centers in Freeport, Texas. How?

The best thing to do is to dig in and do some research. You can start with a site I came across when researching for a treatment facility for myself.(still researching)

sobernow.com

Another good one is theroadout.org, ask for sigal. Sometimes She's so good I begin to believe in miracles again.

I agree with you that the Internet sometimes provides confusing details. I too have heard of the news that buprenorphine happens to be more appealing than methadone, but then again, I don't know much about the subject. Below are links that may get to help you in your search. Good luck! I do hope that you get the information you need.