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.

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