I have installed l.a noire successfully but when I click on lanoire.exe nothing happens.it does nt even appear in the task manager.i have installed all software from the disc includingRockstar social clubDirectxMicrosoft.NET 4.5Microsoft C++ 2008(x86)But the GameShield Ironwrap and patcherWas not in the directoryDo you think I should install itDo...