Download and Install Nagios NSClient

$myWindowsID=[System.Security.Principal.WindowsIdentity]::GetCurrent()
$myWindowsPrincipal=new-object System.Security.Principal.WindowsPrincipal($myWindowsID)
$adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator
if (-not $myWindowsPrincipal.IsInRole($adminRole))
{
    $newProcess = new-object System.Diagnostics.ProcessStartInfo "PowerShell";
    $newProcess.Arguments = $myInvocation.MyCommand.Definition;
    $newProcess.Verb = "runas";
    [System.Diagnostics.Process]::Start($newProcess);
    exit
}

New-Item C:\Windows\Temp\nagios
## Server 2008 Compatibility, hence .Net.
"Downloading NSClient"
$downloader = new-object System.Net.WebClient
$downloader.Proxy.Credentials=[System.Net.CredentialCache]::DefaultNetworkCredentials;
$downloader.DownloadFile('http://<P-Address>/nsclient.ini.txt','C:\Windows\Temp\nagios\nsclient.ini')

If ($ENV:PROCESSOR_ARCHITECTURE -eq 'x86') {
    $downloader.DownloadFile('http://<IP-Address>/NSCP-0.4.3.143-Win32.msi','C:\Windows\Temp\nagios\NSCP-0.4.3.143-Win32.msi')
    Start-Process -FilePath msiexec -ArgumentList /i, C:\Windows\Temp\nagios\NSCP-0.4.3.143-Win32.msi, /passive, /norestart, ADDLOCAL='ALL', REMOVE='Documentation,NSCAPlugin' -Wait
}
Else {
    $downloader.DownloadFile('http://<IP-Address>/NSCP-0.4.1.105-x64.msi','C:\Windows\Temp\nagios\NSCP-0.4.1.105-x64.msi')
    Start-Process -FilePath msiexec -ArgumentList /i, C:\Windows\Temp\nagios\NSCP-0.4.1.105-x64.msi, /passive, /norestart, ADDLOCAL='ALL', REMOVE='Documentation,NSCAPlugin' -Wait
}

Copy-Item -Path 'C:\Windows\Temp\nagios\nsclient.ini' -Destination 'C:\Program Files\NSClient++\nsclient.ini' -Force
Restart-Service nscp
Remote-Item C:\Windows\Temp\nagios -Recurse -Force