连接sql server 2000报错！求助！！

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Test { /**
 * @param args
 */
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Connection cn;
try {
cn = DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databaseName=master","","");
Statement st = cn.createStatement();
ResultSet rs = st.executeQuery("Select * FROM MSreplication_options");
while(rs.next())
{
for(int i = 0; i <= 7; i++)
{
System.out.println(rs.getString(i+1));
}
}
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}}//
//
//
cn = DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databaseName=master","","");
这句报错，
报错信息是：
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket.
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSConnection.<init>(Unknown Source)
at com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.cloudcloud.soft.Test.main(Test.java:33)
求救！！！！