Hi bevineau101,
Assuming you are referring to the column titles in the header row of the shortcode table, there are a couple of ways.
First, as a quick and dirty hack, you can go into the mstw-game-schedule.php file and change the column titles (approx rows 850-857). Of course this approach is problematic should you wish to use the next release of the plugin (and the next, and the next).
Or, you will notice that the column titles are internationalized in the code; so you can create your own “translation” of the strings. Perhaps you choose country code “xy_XY”. Then just edit the default.po file, “translate” the titles to what you want (you don’t need to translate anything else), and save a new mstw-loc-domain-xy_XY.po file. Voila! You’re done without changing any code. [You’ll need to read up on poedit and WordPress Internationalization if you’re not familiar with it. Google it.]
Good Luck.
-Mark
