错误日志：
[05/25/09,15:04:01] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147023293.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio Web 创作组件 is not installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft .NET Compact Framework 2.0 SP2 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft .NET Compact Framework 3.5 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio Tools for the Microsoft Office system (3.0 版运行库) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio 2005 Tools for the 2007 Microsoft Office System Runtime was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio 2005 Tools for the 2007 Microsoft Office System Runtime 语言包 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio Tools for the Microsoft Office system (3.0 版运行库)语言包 - CHS was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft SQL Server Compact 3.5 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft SQL Server Compact 3.5 设计工具 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft SQL Server Compact 3.5 For Devices was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Windows Mobile 5.0 SDK R2 for Pocket PC was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Windows Mobile 5.0 SDK R2 for Smartphone was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Device Emulator 3.0 版 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft SQL Server 2005 Express Edition (x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 Tools (x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 标头和库(x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 Win32 Tools (x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 .NET Framework Tools (x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 SDK 引用程序集和 IntelliSense (x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft Visual Studio 2008 性能收集工具(x86) was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Crystal Reports Basic for Visual Studio 2008 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Crystal Reports Basic for Visual Studio 2008 语言包 was not attempted to be installed.
[05/25/09,15:04:01] VS70pgui: [2] DepCheck indicates Microsoft SQL 发布向导 was not attempted to be installed.
问题原因：
原来是office 2007安装后, 我把C:\MSOCache\All Users目录里的东西删了的原因.
解决办法：
先删除office 2007 然后再重装office 2007,最后安装VS2008, 这下就ok啦
