The context menu-item New View is missing from the faces-config.xml editor but is described in the documentation.

http://www.redhat.com/docs/en-US/JBoss_Developer_Studio/3.0/html/JSF_Tools_Tutorial/adding_navigation.html

"Right-click anywhere on the diagram and select New View... from the pop-up menu "

See screenshot.

Config:
-launcher
C:\jbdevstudio-win32-3.0.0.v201003100055R-H50-GA\eclipse\eclipse.exe
-name
Eclipse
--launcher.library
C:\jbdevstudio-win32-3.0.0.v201003100055R-H50-GA\eclipse\plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519\eclipse_1206.dll
-startup
C:\jbdevstudio-win32-3.0.0.v201003100055R-H50-GA\eclipse\plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
-vm C:\tools\java\jdk1.6.0_18_32bit\bin\javaw.exe
-vm
C:\tools\java\jdk1.6.0_18_32bit\jre\bin\client\jvm.dll
eclipse.home.location=file:/C:/jbdevstudio-win32-3.0.0.v201003100055R-H50-GA/eclipse/
eclipse.launcher=C:\jbdevstudio-win32-3.0.0.v201003100055R-H50-GA\eclipse\eclipse.exe
eclipse.p2.data.area=@config.dir/../p2/
eclipse.p2.profile=SDKProfile
eclipse.product=com.jboss.jbds.product.product
eclipse.startTime=1273423887319
eclipse.vm=C:\tools\java\jdk1.6.0_18_32bit\jre\bin\client\jvm.dll
eclipse.vmargs=-Xms256m
-Xmx1024m
-Dosgi.bundles=reference:file:org.eclipse.equinox.simpleconfigurator_1.0.101.R35x_v20090807-1100.jar@1:start,org.eclipse.equinox.transforms.xslt@1:start,org.jboss.tools.equinox.transforms.xslt@1:start
-XX:MaxPermSize=256m