jsp+tomcat+sql2000的问题，谢谢

我是这样做的：index.jsp接收index.htm传过来的数据，sql.java是一个javabean程序，它封装了常用数据库的连接，关闭，数据的查询，插入，删除等

sql.java如下：

import java.sql.*;
public class sql
{
String sDBDriver = "sun.jdbc.odbc.jdbcOdbcDriver";
String sConnStr = "jdbc:odbc:guestbook";
Connection conn = null;
ResultSet rs = null;
public sql()
{
try
{
Class.forName(sDBDriver);
}
catch(java.lang.ClassNotFoundException e)
{
System.err.println("sql(): " + e.getMessage());
}
}
public void executeInsert(String sql)
{
try
{
conn = DriverManager.getConnection(sConnStr);
Statement stmt = conn.createStatement();
stmt.executeUpdate(sql);
}
catch(SQLException ex)
{
System.err.println("sql_data.executeUpdate: " + ex.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
rs = null;
try
{
conn = DriverManager.getConnection(sConnStr);
Statement stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
}
catch(SQLException ex)
{
System.err.println("sql_data.executeQuery: " + ex.getMessage());
}
return rs;
}
public void executeDelete(String sql)
{
try
{
conn = DriverManager.getConnection(sConnStr);
Statement stmt = conn.createStatement();
stmt.executeUpdate(sql);
}
catch(SQLException ex)
{
System.err.println("sql_data.executeDelete: " + ex.getMessage());
}
}
}


大家帮我看看有没有什么错误

还有我用的tomcat+sql2000，如果上面没有错误的话，在tomcat里还要怎么配置，web-inf里这些怎么放。实在感谢各位！！！