title: How to "Install"/"Enable" .Net 3.5 SP1 under Windows 7?
body: <p>I'm writing a deployment application that should install all required components before load main module. But I has an issue with dotnet 3.5 SP1 installation on Windows 7. Windows 7 incorporate the dotnet 3.5 SP1, but some times that component disabled by user/manufacturer/...
  User can enable it from the Control Panel, but I can't ask him to do that.
  How can I enable it from my software, I should exclude a all manual configuration from the deployment process.</p>