Please see: http://www.siteadvisor.com/ratingpolicy.html
For updated policies and what webmasters can do regarding their websites.
Also see How To Contact SiteAdvisor
If you want to address an issue with a web site in Site Advisor, that is based on McAfee's Trusted Source Web Reputation, please go to http://www.trustedsource.org/en/feedback/url and use the web form to contact the Trusted Source team.
If you want to track your requests or be notified via email, you can register for a free TrustedSource.org account.
Hayton might see this and add something more re the process above