Computerzworld

Explore the world of computers.

Hey there! Thanks for dropping by Theme Preview! Take a look around
and grab the RSS feed to stay updated. See you around!

Category : Tips and Tricks

VirtualBox is an x86 virtualization software package, originally created by German software company innotek, now developed by Sun Microsystems as part of its Sun xVM virtualization platform. It is installed on an existing host operating system; within this application, additional operating systems, each known as a Guest OS, can be loaded and run, each with its own virtual environment.

Supported host operating systems include Linux, Mac OS X, OS/2 Warp, Windows XP or Vista, and Solaris, while supported guest operating systems include FreeBSD, Linux, OpenBSD, OS/2 Warp, Windows and Solaris.

According to a 2007 survey by DesktopLinux.com, VirtualBox is the third most popular software package for running Windows programs on Linux desktops.

Shutdown,restart,hibernate shortcut

Go to your desktop and right click somewhere clear then choose SHORTCUT from the NEW menu.

Enter shutdown -s -t 0 then click next.

For other things here are the codes:
Restart: shutdown -r -t 0
Logoff: shutdown -l -t 0
Hibernate: rundll32.exe PowrProf.dll, SetSuspendState Hibernate

Type Shut Down (Title Name) or whatever you want, Click Finish.

Activate the keyboard mouse

Follow the given steps to activate the keyboard mouse:

To edit this feature, first you should log onto your computer with administrative rights.

To activate this feature, press Alt+Shift+NumLock keys at once and you will receive a small MouseKey box.

To keep MouseKeys on, click on Ok button or click on cancel button to cancel MouseKeys box.

Click on Settings button, if you want to adjust the mouse cursor detail settings.

Here a new dialog box will appear with the title Settings for MouseKeys”, now you can manage all mouse settings for example mouse cursor speed, acceleration and some other features.

Now using Numeric keypad, you can move your mouse pointer. The controls are:

*1,2,3,4,6,7,8 and 9 keys are used to move the mouse cursor into different directions.

*Key 5 is used as mouse click button.

*Insert key used to hold down mouse button.

*+ Sign used to double click on any object.

*Delete button used to release the mouse.

*Click on NumLock button to disable this keyboard mouse feature.

Change MAC address

1. Go to Start->Settings->Control Panel and double click on Network and Dial-up Connections.

2. Right click on the NIC you want to change the MAC address and click on properties.

3. Under “General” tab, click on the “Configure” button

4. Click on “Advanced” tab

5. Under “Property section”, you should see an item called “Network Address” or “Locally Administered Address”, click on it.

6. On the right side, under “Value”, type in the New MAC address you want to assign to your NIC. Usually this value is entered with the “-“ between the MAC address numbers.

7.Goto command prompt and type in “ipconfig /all” or to verify the changes. If the changes are not materialized, then use the second method.


Gears, formerly Google Gears, is beta software offered by Google to enable offline access to services that normally only are available online. It installs a database engine, based on SQLite, on the client system to cache the data locally. Gears-enabled pages use data from this local cache rather than from the online service. Using Gears, a web application may periodically synchronize the data in the local cache with the online service. If a network connection is not available, the synchronization is deferred until a network connection is established. Thus Gears enables web applications to work even though access to the network service is not present.