有关 JIT debugger 的问题：No registered JIT debugger was specfied.

总结：
1、很多机器的XP关掉了 Distributed Transaction Coordinator 服务和 WMI Performance Adapter 服务，这两个服务很可能在VS2008安装的时候要用到，需要启动。但是我没仔细来测试到底是不是两个服务都需要启动。反正我是启了问题解决。

2、关于“本地安全策略”无法打开的问题，是不是影响VS2008的安装，我不知道，没认真测，估计关系不在，VS2008安装不起的主要原因应该是第一条。

可能是我之前在安装framework的时候由于出现Just-in-time 报错，进而删除了两条注册表信息造成的

Just-In-Time debugging is a feature that launches the Visual Studio debugger automatically when a program, running outside Visual Studio, encounters a fatal error. Just-In-Time debugging allows you to examine the error before the application is terminated by the operating system. The Visual Studio debugger does not need to be running when the error occurs.

If an error occurs while Just-In-Time debugging is enabled, a dialog box opens, asking if you want to debug the program and which debugger you want to use.

If a program running as another user hits a fatal error, a security warning dialog box appears before the debugger starts. For more information, see Security Warning: Attaching to an Untrusted Process Can Be Dangerous.

You can enable Just-In-Time debugging from the Options dialog box. For more information, see How to: Enable/Disable Just-In-Time Debugging. For Windows forms, you must also enable Just-In-Time debugging in the machine.config or application.exe.config file. For more information, see How to: Enable Just-In-Time Debugging for Windows Forms. After Visual Studio is installed on a server, the default behavior when an unhandled exception occurs is to show an Exception dialog that requires user intervention to either start Just-In-Time debugging or ignore the exception. This may be undesirable for unattended operation. To configure the server to no longer show a dialog when an unhandled exception occurs (the default behavior prior to installing Visual Studio), use the registry editor to delete the following registry keys:

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion/AeDebug/Debugger
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/.NETFramework/DbgManagedDebugger

On a 64-bit operating system also delete the following registry keys:

HKEY_LOCAL_MACHINE/SOFTWARE/Wow6432Node/Microsoft/Windows NT/CurrentVersion/AeDebug/Debugger
HKEY_LOCAL_MACHINE/SOFTWARE/Wow6432Node/Microsoft/.NETFramework/DbgManagedDebugger

Note
Just-In-Time debugging will not work for managed code hosted in a native application, such as Visualizers.


Note
After installing the .NET Framework on Windows Server 2003 or on Windows 2000 SP3 (or later), Just-In-Time debugging will not work on a process running in a limited user account in a Terminal Services session until the computer has been rebooted.