This week's book giveaway is in the Java in General forum. We're giving away four copies of Think Java: How to Think Like a Computer Scientist and have Allen B. Downey & Chris Mayfield on-line! See this thread for details.
Check your web.xml file in %CATALINA_HOME%\conf\
(that is, the web.xml for your tomcat installation and not an individual web application)
the following init params for the Default Servlet enable directory listings. These should work the same in windows and linux (maybe your linux install is different for some reason. I think true used to be the default and now false is the default)