FileZilla Server and XML-files. Any simpleXML help?

I use FileZilla server as the FTP solution for my users. I have a script which runs a simplexml function and creates a user in the XML file.

The XML structure:

<?xml version="1.0"?>
<FileZillaServer>
<Settings>
<Item name="Serverports" type="string">21</Item>
<Item name="Number of Threads" type="numeric">4</Item>

... lots of other <Item>-tags with settings here ...

<Item name="Admin port" type="numeric">****</Item>
<SpeedLimits>
<Download/>
<Upload/>
</SpeedLimits>
</Settings>
<Groups/>
<Users>
<User Name="user1">
<Option Name="Pass">3196a536138f736a0f9cbeefa8b5a2e9</Option>
<Option Name="Group"/>
<Option Name="Bypass server userlimit">0</Option>
<Option Name="User Limit">0</Option>
<Option Name="IP Limit">0</Option>
<Option Name="Enabled">1</Option>
<Option Name="Comments"/>
<Option Name="ForceSsl">0</Option>
<IpFilter>
<Disallowed/>
<Allowed/>
</IpFilter>
<Permissions>
<Permission Dir="C:\path">
<Option Name="FileRead">1</Option>
<Option Name="FileWrite">1</Option>
<Option Name="FileDelete">1</Option>
<Option Name="FileAppend">1</Option>
<Option Name="DirCreate">1</Option>
<Option Name="DirDelete">1</Option>
<Option Name="DirList">1</Option>
<Option Name="DirSubdirs">1</Option>
<Option Name="IsHome">1</Option>
<Option Name="AutoCreate">0</Option>
</Permission>
</Permissions>
<SpeedLimits DlType="0" DlLimit="10" ServerDlLimitBypass="0" UlType="0" UlLimit="10" ServerUlLimitBypass="0">
<Download/>
<Upload/>
</SpeedLimits>
</User>

... more users here if any ...

</Users>
</FileZillaServer>

Code (markup):

As you can see there is an <option>-tag with the users password encrypted in MD5. Keeping in mind that there are several <User>-tags, how do I change this password with a PHP script?

This is the script I use to add users:

$userXMLString ='
<User Name="'.$user.'">
<Option Name="Pass">'.$md5pass.'</Option>
<Option Name="Group"/>
<Option Name="Bypass server userlimit">0</Option>
<Option Name="User Limit">0</Option>
<Option Name="IP Limit">0</Option>
<Option Name="Enabled">1</Option>
<Option Name="Comments"/>
<Option Name="ForceSsl">0</Option>
<IpFilter>
<Disallowed/>
<Allowed/>
</IpFilter>
<Permissions>
<Permission Dir="N:\hosted\\'.$user.'">
<Option Name="FileRead">1</Option>
<Option Name="FileWrite">1</Option>
<Option Name="FileDelete">1</Option>
<Option Name="FileAppend">1</Option>
<Option Name="DirCreate">1</Option>
<Option Name="DirDelete">1</Option>
<Option Name="DirList">1</Option>
<Option Name="DirSubdirs">1</Option>
<Option Name="IsHome">1</Option>
<Option Name="AutoCreate">0</Option>
</Permission>
</Permissions>
<SpeedLimits DlType="0" DlLimit="10" ServerDlLimitBypass="0" UlType="0" UlLimit="10" ServerUlLimitBypass="0">
<Download/>
<Upload/>
</SpeedLimits>
</User>';
	   
	    //Funksjon fra php.net
	    function simplexml_append(SimpleXMLElement $parent, SimpleXMLElement $new_child){
	       $node1 = dom_import_simplexml($parent);
	       $dom_sxe = dom_import_simplexml($new_child);
	       $node2 = $node1->ownerDocument->importNode($dom_sxe, true);
	       $node1->appendChild($node2);
	    }
	    //xml
	    $xml = simplexml_load_file('C:\ftp\FileZilla Server.xml');
	
	    if($xml === false){
	      exit('xml file could not be loaded');
	    }
	
	    try{
	      //$userXML inneholder XML for den nye brukeren som en string   
	      $userXML = new SimpleXMLElement($userXMLString);  
	    } catch(Exception $e){
	      exit('Invalid XML given for user');
	    }
	    simplexml_append($xml->Users,$userXML);
	    $printxml =  $xml->asXML();

$filezillaxml = 'C:\ftp\FileZilla Server.xml';

// Opening XML file... ( Task 9 )
    if ($handle2 = fopen($filezillaxml, 'w')) {
    echo'Task 9 complete!<br />'; } else {die('Task 9 FAIL'); }
    
// Write user information to XML ( Task 10 )
    if (fwrite($handle2, $printxml)) {
        echo 'Task 10 complete!<br /><br />';
        } else {die('Task 10 FAIL');}

Code (markup):

So I am looking for a script to find and change the correct password for a given username inside this XML file. I find it very hard to achieve.

Hope someone can help.

 

[--(eek)--]
scrap that, you have more users in the same file....