To Run Windows In Linux you must have VirtualBox to be installed. This tool is created by Sun Micro systems. By this you can install Linux inside windows or windows inside Linux or mac inside both Linux or windows.

Here we describing how to run Linux in a windows machine

1. Download VirtualBox from here
2. GRAB your favorite Live Linux ISO
3. Install VirtualBox (you may encounter a couple of Windows warnings, click "continue anyway") You may be prompted to reboot. If so reboot your pc.

Setting up VirtualBox:

Start VirtualBox: Start-> Programs-> InnoTek VirtualBox-> VirtualBox

From the VirtualBox control applet, click "New" (then click "Next" in the wizard window that pops up)

Now we need to create a virtual machine: Enter a Name you would like to call this virtual machine and select the operating system type from the OS Type dropdown. (example: Linux 2.6) Then click "Next"

On the next page, move the slider to select how much memory you would like to dedicate to this virtual machine. (example: 512MB) Then click "Next"

We can skip the next page (Virtual Hard Disk) by clicking "Next"

On the Summary page, review your settings and click "Finish"

Now select "Start"from the control applet to start your virtual machine

Once started, you should see a virtual machine window. From the navigation menu, select devices-> Mount CD/DVD ROM-> CD/DVD ROM Image

You should now see a virtual disk manager window. Click "Add" and browse to your Linux ISO (image file) then click "Open" to add the ISO

You should now see your ISO listed. Click "Select" from the bottom of the virtual disk manager

From the virtual machine window navigation menu, select the "Reset" option

Virtual machine will attempt to load the Linux ISO that you have selected and if successful, you should now be looking at your own personal Linux desktop from within Windows.

Use the Cntrl key to switch between Linux and Windows.