I have just downloaded the iPhone SDK. Mounting the .dmg opens a window containing a folder named "Packages". Do I have to install all the packages inside one by one? Also do I have to upgrade to Mac OS 10.5.3? I am running 10.5.1 on AMD. During the installation I saw that it skipped iPhoneSDK. But I install these packages: iPhoneHostSideTools.pkg, iPhoneSDKHeadersAndLibs.pkg, iPhoneSimulatorPlatform.pkg and iPhoneSystemComponents.pkg succesfully. I also installed DashCode and tried to make a simple web application (text editor) and when i simulated it everything looked ok. Thanks!