Powershell - XML file query

Question

Hello, I need to query an XML based file to extract info.  I have used the line below in a script with success,
$Xml.category.machine | Select-Object -Property IP | format-table
based on querying an XML file formatted as below
<Category name="System Summary">
 <!--1. machine details-->
 <Machine test="22">
  <Name>Server1</Name>
  <IP>31.248.95.170</IP>
However the data I need to query is in the format of below.  Can anyone help with how I can reference this to get output from below of Display_Name, State and Start_Mode (the 'Category' field is not unique in the 2nd file so ideally I would be able
to search for Category name="System Summary" but this doesn't work for me.   Thanks!
<Category name="Services">
<Data>
<Display_Name><![CDATA[Adobe Flash Player Update Service]]></Display_Name>
<Name><![CDATA[AdobeFlashPlayerUpdateSvc]]></Name>
<State><![CDATA[Stopped]]></State>
<Start_Mode><![CDATA[Manual]]></Start_Mode>
<Service_Type><![CDATA[Own Process]]></Service_Type>
<Path><![CDATA[c:\windows\system32\macromed\flash\flashplayerupdateservice.exe]]></Path>
<Error_Control><![CDATA[Normal]]></Error_Control>
<Start_Name><![CDATA[LocalSystem]]></Start_Name>
<Tag_ID><![CDATA[0]]></Tag_ID>
</Data>
<Data>

Answer 1

Thanks jrv.  When I ran $nfo=[xml](cat c:\main.nfo)
$nfo.SelectNodes('//Category[@name="Software Environment"]/Category[@name="Services"]/Data')
I got several lines of below so it seems to be accessing the right part of the nfo file - which is great.
Display_Name  : Display_Name
Name          : Name
State         : State
Start_Mode    : Start_Mode
Service_Type  : Service_Type
Path          : Path
Error_Control : Error_Control
Start_Name    : Start_Name
Tag_ID        : Tag_ID
When I ran
$nfo=[xml](cat \temp\system.nfo)
$nfo.SelectNodes('//Category[@name="Software Environment"]/Category[@name="Services"]/Data') |
ForEach-Object{
$p=[ordered]@{
Name=$_.Name.innerText
DisplayName=$_.Display_Name.innerText
Path=$_.Path.innerText
State=$_.State.innerText
StartMode=$_.Start_Mode.innerText
New-Object PsCustomObject -Property $p
} |ft -auto
I got lots of messages like below:
New-Object : Cannot validate argument on parameter 'Property'. The argument is null or empty. Supply an argument that is not null or em
pty and then try the command again.
At line:11 char:46
+           New-Object PsCustomObject -Property <<<<  $p
    + CategoryInfo          : InvalidData: (:) [New-Object], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.NewObjectCommand
Unable to find type [ordered]: make sure that the assembly containing this type is loaded.
At line:4 char:23
+           $p=[ordered] <<<< @{
    + CategoryInfo          : InvalidOperation: (ordered:String) [], RuntimeException
    + FullyQualifiedErrorId : TypeNotFound
Any ideas?