有好工具也分享一下，关于VS2010 MSDN的
VS2010的MSDN的改变让我们很难适应，总是感觉不方便，今天在网上看到一个官方工具Microsoft Help Viewer Power Tool (Beta)可以将MSDN转变为类似VS2008的MSDN，有检索功能了！！地址是
http://code.msdn.microsoft.com/HelpViewerPowerTool

顺便再提一个工具InteropSignatureToolkit，www.codeplex.com上的，类似于API精灵，支持到.net2005，看看就知道了
地址是http://clrinterop.codeplex.com/releases/view/14120


以下是Microsoft Help Viewer Power Tool (Beta)的安装说明：
Setup Issues: 
1.If Help Viewer Power Tool is installed while Help Library Agent is running, the installation of the Help Viewer Power Tool will spawn another instance of the Help Library Agent, and two icons will appear in the system tray. Closing the first instance will cause F1 to fail for the given session. 
Work-around: Make sure that Help is closed and the Help Library Agent is not in the system tray before installing Help Viewer Power Tool 


2.Help Viewer Power Tool setup does not work for non en-us Visual Studio 2010 versions. 
Work-around for installing Help Viewer Power Tool for a localized (VS\100\) catalog, and before installing the Help Viewer Power Tool (note that the below uses ja-jp as an example locale, and that while the work-around should support localized content, the UI will still be in English): 
1.Go to your manifest folder under the help local store folder . 
2.Open QueryManifest.*.xml file for edit 
3.Look for the following entry: catalog productId="VS" productVersion="100" productLocale="JA-JP." If this string is not present, then edit one of the existing catalogs to this value. For example, if you have VS\100\JA-JP locale installed, you will have the following entry: 

catalog productId="VS" productVersion="100" productLocale="ZH-CN" 
Update this entry to: 
catalog productId="VS" productVersion="100" productLocale="EN-US" 
!!!!!!!!!!!!!!!由于只支持英文，因此如果我们装的是中文的要将"ZH-CN"改为"EN-US"!!!!!!!!!!!!!!!!!!!!!
a. Run powertool setup. 
b. Revert the changes that you did in step (3) before launching Help viewer. 
！！！！！！！！！装完了再改回来，否则找不到帮助文件了！！！！！！！！！！

4.Install the Help Viewer Power Tool. 
5.Go to your manifest folder under the help local store folder . 
6.Open QueryManifest.*.xml file for edit 
7.Update the branding package name to “dev10pt.mshc” - change: 

<brandingPackageFileName>dev10.mshc</brandingPackageFileName></catalog> 
to 
<brandingPackageFileName>dev10pt.mshc</brandingPackageFileName></catalog> 

!!!!!!!!!!!!!!!我的装完就是dev10pt.mshc，如果不是就改成dev10pt.mshc，如果想用回原来的样式直接把pt去掉就行了即dev10.mshc !!!!!!!!!!!!!!!!!!!!!!!!

注意事项也要看看
Non-setup issues: 
1.This release is untested for non-RTM versions of Visual Studio 2010. 
2.When browsing topics in content panel (in the browser), the URL in the address bar does not get updated. 


3.When IE is not running with full trust privileges and viewing offline help, the Silverlight error message is incorrect. 
Work-around: Update IE security settings to permit full trust privileges. 
！！！！！！！！如果是IE最好用IE8，而且要禁用保护模式，否则不显示，我就搞了半天！！！！！！！！！！！

4.After the Help Viewer Power Tool is uninstalled, and customer browses to Help content, a 503 error message will appear. 
Work-around: Close the Help Agent before uninstall process. 


5.With the Help Viewer Power Tool installed, press F1 or view Help. If an F1 results in a 404, page will appear without the Index panel. 


6.Offline help page does not display the TOC, Search nor Index for IE6. 
Work-around: Upgrade to IE8.0 


7.If the Help Agent is exited when setting "standaloneviewer=true" the Help Viewer Power Tool does communicate with the newly launched Help Agent instance.