<hibernate-configuration>
<session-factory>
    <property name="connection.url">jdbc:jtds:sqlserver://XX.XX.XXX.XX:YYYY/DB-NAME</property>
    <property name="connection.driver_class">net.sourceforge.jtds.jdbc.Driver</property>
    <property name="connection.username">username</property>
    <property name="connection.password">password</property>
    <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
.
.
.
</session-factory>
</hibernate-configuration>

<hibernate-configuration>
<session-factory>
    <property name="connection.url">jdbc:microsoft:sqlserver://XX.XX.XXX.XX:YYYY/DB-NAME</property>
    <property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
    <property name="connection.username">username</property>
    <property name="connection.password">password</property>
    <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
.
.
.
</session-factory>
</hibernate-configuration>

<jee:jndi-lookup id="dataSource" lookup-on-startup="true" resource-ref="true"  jndi-name="jdbc/resourcename"/>

<Resource name="jdbc/resourcename" auth="Container" type="javax.sql.DataSource"
    username=username password=password driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"
    url="jdbc:sqlserver://localhost:1433;databaseName=dbname />

<property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect" />