Custom Directory for IP Phones

I'm trying to use a php script to display / search our active directory.
However, I can't even get the option #4 to appear when hitting the
directory button.  I'm outputting the same XML as the standard call
manager scripts with DC Directory.  Any ideas what I'm doing wrong?  My
XML output is:

<CiscoIPPhoneMenu>
<Prompt>Select a directory</Prompt> 
<MenuItem>
<Name>Corporate Directory</Name> 
<URL>http://ciscodir.niku.com/scripts/ciscoDir.php?op=input</URL> 
</MenuItem>
</CiscoIPPhoneMenu>

I'm using php and sending out:

header("Content-type: text/xml");
header("Connection: close");
header("Expires: -1");

just before the above as I read somewhere online.  I've tried not
sending those headers too..same thing..don't see option 4 when I hit
"Directories"..  For reference (and for anyone that wants to re-use)
I've attached the main script.  Some mods were made to the CiscoIPPhone
class to accommodate my usage.  I debugged the XML code using a browser
and made it match, step by step the cisco ASP pages...I was offsite and
didn't have a phone at the time.

-Anthony

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