thank you. William and robbie
i ve checked tomcat's example page which works without problem.
and when i try to run a jsp file through tomcat .
some of them can be come up .but IE only display the html language's thing except compile the content between jsp tab <% and %> .
then i suppose the problem is attribute to my jdk1.3's installation (but i m not sure). or relevant environment variable properties. i mean setting system environment variable .include path , classpath , java_home ,or sth like that.