File list (Check if you may need any files):
CometDemo\.classpath
.........\.project
.........\.settings\.jsdtscope
.........\.........\org.eclipse.core.resources.prefs
.........\.........\org.eclipse.jdt.core.prefs
.........\.........\org.eclipse.wst.jsdt.ui.superType.container
.........\.........\org.eclipse.wst.jsdt.ui.superType.name
.........\ROOT\960.css
.........\....\META-INF\MANIFEST.MF
.........\....\WEB-INF\classes\demo\ChatServlet$MessageSender.class
.........\....\.......\.......\....\ChatServlet.class
.........\....\.......\.......\....\MessageServlet.class
.........\....\.......\web.xml
.........\....\index.jsp
.........\....\jquery-1.4.2.min.js
.........\....\prototype.js
.........\src\demo\ChatServlet.java
.........\...\....\MessageServlet.java