Link to internals slides from tutorial

www/doc/internals.html

@@ -10,16 +10,18 @@
 <li><b>
 <a href="docwrapper.php3?docname=arch-small.html">Emulab System Architecture
 	  - Condensed</a></b>
-<img src="/new.gif">
 <br><br>
 <li><b>
 <a href="docwrapper.php3?docname=arch.html">Emulab System Architecture
 	  - Detailed</a></b>
-<img src="/new.gif">
 <br><br>
 <li><b>
 <a href="docwrapper.php3?docname=states.html">Emulab State Machines</a></b>
 <br><br>
+<li><b>
+<a href="http://www.cs.utah.edu/flux/testbed-docs/internals/">Some Powerpoint slides on Emulab internals</a></b>
+<img src="/new.gif">
+<br><br>
 </ul>
 
 <hr>