Now that Windows Vista Service Pack 1 is out, many people are reporting that this update has either improved Vista's performance or has not caused any noticeable changes. However, for anyone who runs into issues, there will be free support available through March 18, 2009. You can submit your issues via email, chat, or by calling 1-800-234-6020. You can access the different options from this page. Support will even be available on weekends - which is especially handy for businesses deploying SP1 during the company's downtime.