Try to follow the steps described in http://community.jboss.org/message/620467#620467
jboss-birt-servlet.jar and jboss-seam-birt.jar are placed in the org.jboss.tools.birt.core plugin within the resources directory.
The web.xml file has to contain standard parameters for a BIRT Web report . If you want to use the JBoss Birt embedded report, you need to add the following:
<servlet>
<servlet-name>JBoss BIRT Servlet</servlet-name>
<servlet-class>org.jboss.tools.birt.servlet.JBossBirtServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>JBoss BIRT Servlet</servlet-name>
<url-pattern>/embed</url-pattern>
</servlet-mapping>
to the web.xml.
If this doesn't help you, please wait until we fix https://issues.jboss.org/browse/JBIDE-9299 that, I hope, will be done in JBoss Tools 3.3.0.M4