Maybe off topic: Just a heads up, the MSSQL driver's may not work with Android (they did not in the past, things may have changed). Just keep that in mind. In case they don't, the alternative would be to use the jTDS drivers (
http://jtds.sourceforge.net/). Those, on the other hand, may not work with the latest and greatest MSSQL.
On topic: Any libraries that you download should be placed in the Additional Libraries folder that you set up in Tools->Configure Paths. This way you do not have to touch the internal library folder that is located under the Program Files (32bit OS) or Program Files (x86) (64 bit OS) folder. Note: some libraries are just a collection of one or more .jar files, some include an .xml file (as does JdbcSQL), and the newer ones have the extension .b4xlib
You need to enable the JdbcSQL library as per
@DonManfred above
In the Main module, you need to replace
#AdditionalJar: mysql-connector-java-5.1.34-bin
With whatever MSSQL driver you are using (and the associated .jar file(s) should be located in your Additional Libraries folder).
In the Starter module, you need to
1) adjust all the Private variables in Process_Globals to match your MSSQL server's needs
2) in the ListAnimals sub, you need to
a) change the query to something that exists on your MSSQL server
b) change the log output log the columns of the adjusted query