Yes, unless you plunk your folder under the ROOT web app (which you don't want to do since that will just add your stuff to an existing web app rather than creating a new one of your own), you need to define a new 'context'.
For
Tomcat, the following example (lifted from my server.xml) shows a new context definition.
The context is declared within the <Host> element of the server.xml file.
Once Tomcat is restarted, the url
http://myserver:8080/trf/ would be used to access the new context (correct server name and port substituted, of course).
Be sure that the web app located at the specified folder follows servlet spec conventions (WEB-INF and all that stuff).
hth,
bear
P.S. Curse you and your typo! Now I've got the theme song from Top Cat playing in my head and I can't get rid of it!
[ July 03, 2003: Message edited by: Bear Bibeault ]