Delphi 5 Plugin

I need to add new features (plugin) to a Delphi 5 editor. Like a Eclipse IDE plugin. It works like this: Programmer is coding something, select the method name and write click, in menu will show the new option (see this method). When selected this option, will launch the OS default browser in a pre-configured server address, sendind others 2 other pre-configured params and the text selected by user.