Theres no point. The .app file doesn't contain the source code for the application, just machine code - converting the machine code "back" to source code is likely to be impossible, or at least a nightmare, and its certainly not something that Xcode can do. XCode is a development tool, it is not a reassembler. And the 10.5 dock requires the Core Animation framework, which is built separately, and is likely impossible (or at the easiest incredibly difficult) to port back to 10.4that is what I have- the liger dock. I was just wondering if someone with leopard could go to HD/system/library/coreservices/dock.app and upload it for me.