Selecting multiple files in Explorer
If you press F2 when more than one file is selected in Windows Explorer,
only one file—the active file—gets a text field for you to type in. Nothing
will happen to the other selected files, at least not yet.
The active file is important, since its name is used as a template to rename
the other selected files. If the file marked as active is not the one you want to
use, hit Esc, and then hold the Ctrl key while clicking another file. If the
new file was highlighted, it will become deselected—in this case, just Ctrlclick
the file once more to reselect it. Then, press F2 again to show the text
field.
Rename the active file as desired, and press Enter when you’re done. The
active file keeps its new name, and then Explorer assigns the same name—
plus a number, in parenthesis—to all the other files.
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I’ve installed VirtualBox and into VirtualBox I have installed Windows XP.
One of these days I’l put a tutorial on how to do it.
here is a screenshot of XP running inside Vista

XP running inside Vista
Edit or create a startup menu that lets you choose which operating system to boot into in multiboot systems, or create a menu that lets you choose different startup options for your single operating system if you have only XP installed.
If you’ve installed another operating system (in addition to XP) on your system, your PC starts up with a multiboot menu, which allows you to choose which operating system you want to run. The menu stays live for 30 seconds, and a screen countdown tells you how long you have to make a choice from the menu. After the 30 seconds elapse, it boots into your default operating system, which is generally the last operating system you installed.
You can customize that multiboot menu and how your PC starts by editing the boot.ini file, a hidden system file, to control a variety of startup options, including how long to display the menu, which operating system should be the default, whether to use the XP splash screen when XP starts, and similar features. And as you’ll see later in this hack, you can also use the file to create a startup menu that will allow you to choose from different versions of your operating system—for example, one that you’ll use for tracking down startup problems, and another for starting in Safe Mode.
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