Your web app can exist anywhere on the filesystem that Tomcat has access. Create a new Context in server.xml for the app and specify the location as the docbase.
sorry, bear ,i'm quite new in tomcat , i didn't get it ? can u show me more detail ? 1)example i want a make a folder "test" under c:\tomcat to hold my web application , how i set it in server.xml? 2)can i just make a folder say "test" as c:\test , rather than under c:\tomcat\test ? tq