>>When you right click on the Start button there is a little menu that appears. Sometimes when you install software there is new entry in that menu, how can we add or delete some of those entries.
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>From windows help. :-)
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>"To add a program to the Start or Programs menu
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>1 Click the Start button, and then point to Settings.
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>2 Click Taskbar, and then click the Start Menu Programs tab.
>3 Click Add, and then click Browse.
>4 Locate the program you want to add, and then double-click it.
>5 Click Next, and then double-click the menu on which you want the program to appear.
>6 Type the name that you want to see on the menu, and then click Finish.
> If Windows prompts you to choose an icon, click one, and then click Finish.
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>Tip
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>You can also add a program to the top of the Start menu by dragging the program's icon onto the Start button."

I think he's looking to add items to context menus for a file type, which is done through View/Folder Options/File Types in Explorer, or programmatically via the registry by creating registry entries for the file extension under HKEY_CLASSES_ROOT for the file extension (it's a whole lot easier to do with the dialog in Windows Explorer.)