有时，你可能需要一个定制版本的浏览器。在这种情况下，你可以自由地把一些新颖但又不标准的特征增加到一个浏览器上。结果，你最终有的只是一个新但不标准的浏览器。Web浏览器控件只是浏览器的分析引擎。这意味着仍然存在若干的与用户接口相关的工作等待你做――增加一个地址栏，工具栏，历史记录，状态栏，频道栏和收藏夹等。如此，要产生一个定制的浏览器，你可以进行两种类型的编程――一种象微软把Web浏览器控件转变成一个功能齐全的浏览器如Internet Explorer；一种是在现有的基础上加一些新的功能。如果有一个直接的方法定制现有的Internet Explorer该多好？BHO（Browser Helper Objects，我译为"浏览器帮助者对象"，以下皆简称BHO）正是用来实现此目的的。-Sometimes, you may need a customized version of the browser. In such circumstances, you are free to put some novel but not standard features to a browser. The outcome, you eventually have is just not a new standard browser. Web Browser is the browser component of the engine. This means that there are still a number of user interface associated with the work waiting for you to do-- an increase Address bar, toolbars, historical records, status bar, column and collection channels such as folder. Nevertheless, to produce a customized browser, You can be two types of programming-- like Microsoft put a Web browser control into a functional subset of View devices such as Internet Explorer; One is the existing basis of adding some new functionality. If there is a direct way to customize existing