title: Compiling for iOS 3.1.3, using xcode 3.2.3 (and iOS 4 that came with it)
body: <p>I've downloaded the final version (and never installed any beta versions before) of xcode 3.2.3 with sdk 4, and now I can't seem to find a way to compile my app for a 3.1.3 iOS.  </p>
  
  <p>Does anybody know how can I do that ?</p>