How To Check Service Start Type and Set To Automatic With Powershell

As with most of my Windows 2008 administration scripts I prefer to only "touch" the system if it needs updating otherwise leave it alone.  The script below shows how to detect if a service is set to manual, change to automatic and start if required.  Oddly the Get-Service cmdlet doesn't return the start type in PowerShell 2.0 for some reason.  

 function SetServiceStartToAutoMatic($serviceName = $(throw "Service Name was not specified")){  
      $service = Get-Service $serviceName  
      $startType = Get-WmiObject -Query "Select StartMode From Win32_Service Where Name='$($serviceName)'"  
   
      if ($startType.StartMode -eq "Manual"){  
           Set-Service $serviceName –StartupType Automatic  
      }  
 }  
   
 function StartServiceIfStopped($serviceName = $(throw "Service Name was not specified")){  
      $service = Get-Service $serviceName  
      if ($service.Status -eq "Stopped"){  
           Start-Service $serviceName  
      }  
 }  
   
 function Main(){  
      $smtpServiceName = "SMTPSVC"  
      SetServiceStartToAutoMatic $smtpServiceName  
      StartServiceIfStopped $smtpServiceName  
 }  
   
 Main