Register JDBC Driver

I'm new to Java and writing a test program to connect to a SQL Server 2000
database.

I read and follow the instruction in KB article # Q313100. I have modifed
the Classpath statement to include the 3 jar files.

How do I register the driver? In the Q313100 article this statement is
presented; "Driver d =
(Driver)Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();