我在cocos2d-win32.vc2010.sln里面添加现有项目（网上下载的demo，放在cocos2dx目录下），运行报这种错误，请问应该怎么解决呢？
1>C:WindowsMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.Targets(1422,5): warning : The referenced project '......cocos2dxproj.win32cocos2d.vcxproj' does not exist.
1>C:WindowsMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.Targets(1422,5): warning : The referenced project '......CocosDenshionproj.win32CocosDenshion.vcxproj' does not exist.
1>C:WindowsMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.Targets(1422,5): warning : The referenced project '......extensionsproj.win32libExtensions.vcxproj' does not exist.
1>C:WindowsMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.Targets(1422,5): warning : The referenced project '......externalBox2Dproj.win32Box2D.vcxproj' does not exist.
1>C:WindowsMicrosoft.NETFrameworkv4.0.30319Microsoft.Common.Targets(1422,5): warning : The referenced project '......externalchipmunkproj.win32chipmunk.vcxproj' does not exist.
1>InitializeBuildStatus:
1> 正在对“Release.win32LookingFor.unsuccessfulbuild”执行 Touch 任务。
1>ClCompile:
1> AppDelegate.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesAppDelegate.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> CCRadioMenu.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesCCRadioMenu.h(12): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ChooseLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesChooseLayer.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigEvent.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigEvent.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigItem.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigItem.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigMap.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigMap.h(6): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigPrompt.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigPrompt.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigStory.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigStory.h(6): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigText.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigText.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> ConfigWorld.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigWorld.h(5): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> DataPool.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesConfigMap.h(6): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> GameScene.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesGameScene.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> HintLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesHintLayer.h(7): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> MainScene.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesMainScene.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> MapLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesMapLayer.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> InventoryLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesInventoryLayer.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> PromptLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesPromptLayer.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> SceneManager.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesSceneManager.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> SoundManager.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesSoundManager.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> StartScene.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesStartScene.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> 正在编译...
1> StoryLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesStoryLayer.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> UserData.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesUserData.h(6): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> WorldLayer.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforclassesWorldLayer.h(4): fatal error C1083: 无法打开包括文件:“cocos2d.h”: No such file or directory
1> main.cpp
1>c:gamescocos2d-2.1rc0-x-2.1.3lookingforproj.win32main.h(11): fatal error C1083: 无法打开包括文件:“CCStdC.h”: No such file or directory
1>
1>生成失败。