Free unlimited installation and compatibility support is available for Windows Vista, but only for Service Pack 1 (SP1). This support for SP1 is valid until March 18, 2009. Chat and e-mail support is available only in the United States and Canada.
Both email support and phone support (@ Hong Kong: (+852) 2388-9600) are available.
=== For more information ===
– Microsoft Help and Support ~ Windows Vista Service Pack 1