Here is a list of the versions of Input Method Editor (IME) that ship with Windows and Office.

Office IME 2007
IME Version: 12.x
Included with: 2007 Microsoft Office System

Microsoft IME
IME Version: 10.x
Included with: Windows Vista

IME 2003
IME Version: 9.x
Included with: Office 2003

IME 2002
IME Version: 8.1.7xxx
Included with: Windows Server 2003, Windows XP x64

IME 2002
IME Version: 8.1.4xxx
Included with: Windows XP

IME 2002
IME Version: 8.0
Included with: Office XP

IME 2000
IME Version: 7.1
Included with: Windows Me

IME 2000
IME Version: 7.0
Included with: Windows 2000, Office 2000