tomcat+mysql部署jsp环境

我的JSP源程序在WINDOWS平台运行很正常,采用的是Windows2000+Tomcat+mysql;现在要把程序移植到linux系统.
系统:Redhat AS3
JDK:1.5.0
运行正常:
[root@szho001 bin]# java -version
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode, sharing)
tomcat:5.5.17
运行正常:
[root@szho001 bin]# ./startup.sh start
Using CATALINA_BASE: /usr/local/apache-tomcat-5.5.17
Using CATALINA_HOME: /usr/local/apache-tomcat-5.5.17
Using CATALINA_TMPDIR: /usr/local/apache-tomcat-5.5.17/temp
Using JRE_HOME: /usr/java/jdk1.5.0
mysql:3.23.57
运行正常:
[root@szho001 bin]# mysql
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 3 to server version: 3.23.57

Type 'help;' or 'h' for help. Type 'c' to clear the buffer.

mysql>
http://localhost:8080/访问正常.
我把JSP源程序拷贝到/usr/local/tomcat/webapps/,修改了/usr/local/tomcat/conf/server.xml文件,增加了以下内容:

访问http://localhost:8080/games/提示错误,页面显示:

HTTP Status 404 - /games/welcome.do

type Status report

message /games/welcome.do

description The requested resource (/games/welcome.do) is not available.

Apache Tomcat/5.5.17

小弟现在急需解决这个问题,请各位大哥帮忙看看问题所在!!!!!
另外小弟一事不明:是不是需要安息安装配置JDBC for MySQL;如果需要怎么配置?