Installing Java player in 64Bit

How do we revert to Windows XP after “Upgrading” to Windows Vista ?

                DSN Article : How to Revert Back to Microsoft® Windows® XP After Performing a Custom install of Windows Vista®..

•          Click Command Prompt on the Windows Vista Recovery Environment menu.
The Command Prompt window appears.

•          Type c:, where c is the primary drive on which Windows Vista is installed, and press the <Enter> key.

•          Type ren "Windows" "Windows.Vista", and press the <Enter> key.

•          Type ren "Program Files" "Program Files.Vista", and press the <Enter> key.

•          Type rd "Documents and Settings" and press the <Enter> key.

•          Type Xcopy /s /h c:\WINDOWS.OLD\*.* c:\, where c is the primary drive, and press the <Enter> key.

•          Type e:\boot\bootsect /nt52 c:, where e is the optical drive and c is the primary drive, and press the <Enter> key.
The boot sector is restored for the legacy operating system.

•          Close the Command Prompt window, and restart the computer.