read xml file with powershell in windows server 2003 - sharepoint

Question

can you please help me with this code below?
[System.Xml.XmlDocument]$xd = New-Object System.Xml.XmlDocument
$file = "C:\PS\SetUP.xml";
$xd.LoadXml($file);
#$root = $xd.DocumentElement
Write-Host $xd.SelectSingleNode("/Setup").Attributes.GetNamedItem("WebAppUrl").Value
This code works fine when I run it in windows server 2008, but it does not work in windows server 2003.
I tested it in C# in the same environment (win server 2003) and it works, but not in Powershell.
I think there could be some Powershell version issue.
Could you please help me?
Thank you
Xml file
<?xml version="1.0" encoding="utf-8"?>
<Setup WebAppUrl="http://sp2007">
<SiteCollection Name="Report" Url="Report Requests">
<Lists>
<List Name="Report Requests" Url="ReportRequests" />
<List Name="Report Request Tasks" Url="ReportRequestTasks" />
</Lists>
<Features>
<Feature>ContentTypeSyndication</Feature>
</Features>
<Site Name="Child 1" Url="child1" Template="STS#0"/>
<Site Name="Child 2" Url="child2" Template="STS#0"/>
<Site Name="Child 3" Url="child3" Template="STS#0"/>
</SiteCollection>
</Setup>

Answer 1

I don't have v1 but you can read xml files and navigate them the same way regardless of OS version. Can you share the xml file?
[xml]$xd = Get-Content C:\PS\SetUP.xml
$xd.SelectSingleNode("/Setup").WebAppUrl
http://sp2007
If there's only one Setup node then you can get the value with:
$xd.Setup.WebAppUrl

Answer 2

The Powershell version on Windows 2003 is 1.
The version on Windows 2008 is 2.
Link: http://en.wikipedia.org/wiki/Windows_PowerShell#Versions
Simple as that. You can try to upgrade it AFAIK.
Edit: Update procedure -> http://maxt2posh.wordpress.com/2009/12/23/update-powershell-v1-to-v2-windows-management-framework/