first make sure you are using Tiles stand-alone (in Struts Sandbox)
add the follwoing servlet to your web.xml
<servlet>
<servlet-name>Tiles Servlet</servlet-name>
<servlet-class>org.apache.tiles.servlet.TilesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
add the following context-param to your web.xml
<context-param>
<param-name>tiles-definitions</param-name>
<param-value>/WEB-INF/tiles.xml</param-value>
</context-param>
add the following to your faces-config.xml
<view-handler>org.apache.shale.tiles.TilesViewHandler</view-handler>
add the following dependency to your pom.xml
<dependency>
<groupId>org.apache.shale</groupId>
<artifactId>shale-tiles</artifactId>
<version>1.0.3</version>
</dependency>
that should be it.
Khaled