Determining if you need to run upgrade-sql.txt? (supporter)

If the auto-install does not add/modify the db table(s) for you once you've installed the Supporter plugin then run the sql code in "upgrade_sql.txt" on your wpmu db

What does this part of the instructions mean and how do you verify that the tables are installed correctly. So you know whether or not to run the code found in upgrade_sql.txt.

I'm using Multi-DB and have added the global table lines to the dp-congif.php. Do I do or run anything before I go any further?