Resize Windows 7 partition size to prepare space for Ubuntu

Environment :
Windows 7
Ubuntu

Installation / Usage :
Because you are preparing space for installing Ubuntu alongside with Windows 7, you can choose to use either

1. Windows build in disk management tool
2. Bootable Ubuntu DVD with GParted

Option 1 - Windows Disk Management:
* You would need to defrag the harddisk before shrinking it.
Settings -> Control Panel -> Administrative Tools -> Computer Management -> Storage -> Disk Management -> Shrink Volume

Option 2 - Bootable Ubuntu DVD with GParted:
1. Boot into Ubuntu Live (Test Ubuntu)
2. On the Left Top Most Upper icon (Dash Home)
3. under Search, key in "gparted" and press ENTER
4. Right click on the partion and Select "Resize/Move"
5. Using the slider, adjust the amount of space you wish to allocate for Ubuntu installation
6. Click resize
7. You will see "unallocated" space available for Ubuntu installation later.
8. Save the changes by Edit > Apply All Operations (or click the Green Check icon)
9. Reboot

! Remember to reboot and boot back into Windows 7 and make sure its still running properly.