Titanium Studio not Launching iphone app

hi im developing iphone application in titanium studio i have mac intel machine with mac os x 10.5.8 with iphone sdk 3.1.3 installed ,

i am facing a problem i have successfully install titanium studio when i creat new project there is an option enable for iphone i checked it and it create a project but when i try to run this project开发者_如何学编程 in run as there i no option enabled and it is not launching project kindly someone adice what im doing wrong to configure iphone project,any help in this regard is greatly appreciated.

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Requirements are listed on the website:

1. Requirements

   Intel-based computer with Mac OS X (10.6)

Necessary for Installing on Device:

An Apple iOS device (iPhone, iPad, iPod Touch)
iOS developer certification

Your OSX version is not compatible!

http://developer.appcelerator.com/get_started