In my case I installed a German version of WinXp on the from japan imported Notebook. In the beginning you should backup the DRIVER folder which you can find on the C: Drive somewhere.
After you have done this you can start installing windows with the install CD.
When you finished it starts in windows. Everything seems to be good install all the drivers, which also should work well.
If you cannot handle the keyboard you should install the correct driver for the keyboard which is 106/109 japanese keyboard layout. Also don’t forget the language extnesion for east-asian languages, so you also have the language bar in the taskbar.
You will realize that the fancy buttons like volume, playdvd etc and the brightness buttons (which are accessible over the “Fn” key) doesn’t work. For this you should go to vaio-link.com to download the correct utilities.
The bad think here is that the service will tell you that the serial number which you have to enter is not correct, so you cannot access. In my case I called a friend who gave me his serial number (he bought his notebook in europe). In vaio-link.com you can also select to download drivers from different notebooks.
For the VGN-72B I selected the VGN-T2XP/L which looks quite the same. Downloaded the “Preinstalled Utilities” and it worked, the only application which made trouble was the “wireless switch application”, but its not neccessary because it works even without the application.