public void EnablePXE(WqlConnectionManager connection,
					string siteCode,
					string serverName,
					string allowResponse)
{
	try
	{
		//Connect to distribution point instance.			
		IResultObject siteRole = connection.GetInstance("SMS_SCI_SysResUse.FileType=2,ItemName=\"[\\\"Display=\\\\\\\\" + serverName + "\\\\\\\"]MSWNET:[\\\"SMS_SITE=" + siteCode + "\\\"]\\\\\\\\" + serverName + "\\\\,SMS Distribution Point\",ItemType=\"System Resource Usage\",SiteCode=" + "\"" + siteCode + "\"");

		// Create temporary copy of the embedded properties.
		Dictionary<string, IResultObject> embeddedProperties = siteRole.EmbeddedProperties;

		// Enumerate through the embedded properties and makes changes as needed.
		foreach (KeyValuePair<string, IResultObject> kvp in siteRole.EmbeddedProperties)
		{
			// Setting: SupportUnknownMachines
			if (kvp.Value.PropertyList["PropertyName"] == "SupportUnknownMachines")
			{
				// Get current property value.
				Console.WriteLine();
				Console.WriteLine("Property: {0}", kvp.Value.PropertyList["PropertyName"]);
				Console.WriteLine("Current value: {0}", kvp.Value.PropertyList["Value"]);

				// Change value.
				embeddedProperties["SupportUnknownMachines"]["Value"].StringValue = allowResponse;
				Console.WriteLine("Setting the {0} value to {1}.", kvp.Value.PropertyList["PropertyName"], allowResponse);
		}
	}

		// Store the settings that have changed.
		siteRole.EmbeddedProperties = embeddedProperties;

		// Save the settings. 
		siteRole.Put();
}
	catch (SmsException ex)
	{
		Console.WriteLine();
		Console.WriteLine("Failed. Error: " + ex.InnerException.Message);
}
}