Which operating system supports Intel Hyper-Threading Technology?

These are the following Windows Operating Systems that support Intel Hyper-Threading Technology: Windows XP Professional and Home Edition, Windows Vista Home Basic, Premium, Ultimate and Business. And for Linux users: Red Hat Linux Ver 9(Professional and Personal versions), SuSE Linux Ver 8.2 (Professional and Personal versions), Red Flag Linux Desktop ver 4.0, COSIX Linux 4.0