Windows NT
  Profiles are in C:\Winnt\Profiles
  Office 97 = Release 8
  Visual Studio 6 (can use .NET framework)

Windows 2000 (NT 5.0)
  Profiles are in C:\Documents and Settings
  Office 2000 = Release 9
  Visual Studio 6 (can use .NET framework)
  
Windows XP
  Profiles are in C:\Documents and Settings
  Office XP (2002) = Release 10
  Visual Studio 7 / .NET