How to transfer texts from phone to computer with MicroSD card?

I have just a regular Samsung phone, not a Smartphone or anything. My computer is a PC.

I transferred the texts to my MicroSD card, but when I plug it into my computer and open the my_messages folder, I can't see the messages. There seem to be lots of files there; they have names like ems_125, sms_10, and sentems_348. (The numbers are widely variable; I just put in a few random examples.)

However, when I click on any of these files, instead of seeing the text message, an Internet browser opens up. The only text on the page includes the phone numbers involved in the exchange, the date and time, and then a phrase along the lines of "Normal read ems sentbox unlocked."

How can I get it so that I'm seeing and saving the actual content of the text messages?

Thanks!