Search for Windows 7 and 8 Machines only with this script

Hi ALL

Subsun and Qlemo helped me with this last night .. I want to continue with this same script and add two more features.

1. Search the entire domain for Windows 7 and 8 machines only and get the output from the script below.
2. Have the option to modify the script so I can search a particular OU only instead of the entire domain .

As always .. thank you for all the help !

function get-localusers {
 param(
 [Parameter(Mandatory=$true,valuefrompipeline=$true)]
 [string]$strComputer
 )
 
 $Select = "Name","Class","Parent" | %{  
 Invoke-Expression "@{n='$_';e={ `$_.GetType().InvokeMember('$_', 'GetProperty', `$Null, `$_, `$Null) }}"
 }
 
 If (Test-Connection $strComputer -Count 2 -Quiet){
  try{
  $computer = [ADSI]("WinNT://" + $strComputer + ",computer")
  $AdminGroup = $computer.psbase.children.find("Administrators")
  $Adminmembers= $AdminGroup.psbase.invoke("Members") | Select $Select
    foreach ($admin in $Adminmembers) {
    $admin | Select @{N="ComputerName";E={$strComputer}},@{N="Administrators";E={"$(($_.parent -SPLIT "/")[-1])\$($_.Name)"}},Class,Parent
    }
 }catch{ 
 "" | Select @{N="ComputerName";E={$strComputer}},@{N="Administrators";E={"Access Denied"}},Class,Parent
 }
 }
Else {
 "" | Select @{N="ComputerName";E={$strComputer}},@{N="Administrators";E={"Not able to Ping"}},Class,Parent
 }
}
Get-Content "C:\Powershell\Servers.txt" | get-localusers | Select ComputerName,Administrators,Class,Parent | Export-Csv "C:\Powershell\LocalAdm$((get-date).toString('MM-dd-yyyy')).csv" -NTI

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