Add a program to the Right Click Menu So as to Use it Everywhere by just doing a Right-Clicking

When you right click on any folder, you can have access to that application, the same as using Sent To and New. Open Registry Editor. Navigate and choose: HKEY_CLASSES_ROOT\Folder\shell. Add a new Key to the "Shell" Key and name it anything you like. Give it a default value that will appear when you right click a folder, i.e. NewKey (use an "&" without the quotes, in front of any character and it will allow you to use the keyboard). Navigate and click on the registry key HKEY_CLASSES_ROOT\Folder\shell\NewKey. Now you have to add a New Key named Command and Set the (Default) value of the application you want to run. For example: c:\program files\internet explorer\iexplore.exe (Include the full path)

Why do I need JSP technology if I already have servlets?

JSP pages are compiled into servlets, so theoretically you could write servlets to support your web-based applications. However, JSP technology was designed to simplify the process of creating pages by separating web presentation from web content. In many applications, the response sent to the client is a combination of template data and dynamically-generated data. In this situation, it is much easier to work with JSP pages than to do everything with servlets. 

Create a drive menu for My Computer

Windows XP makes it easy for you to configure My Computer so it works like a menu, with

each drive listed as a menu item. Here's how. Right-click the Start button, and select Properties.Click Customize, which is adjacent to the Start Menu radio button, and select Advanced. Scroll through the Start Menu Items list box until you see My Computer. Select Display As A Menu, and click OK twice. Now, when you select My Computer from the Start menu, you'll see a menu of individual drives. To access the contents of that drive, just select the drive letter from the menu