Use the ASP.NET 2.0 CSS Control Adapters for CSS friendly HTML output

"The ASP.NET 2.0 CSS Control Adapters that we released last week provide pre-built control adapters for 11 of the most common ASP.NET controls (GridView, DetailsView, FormsView, DataList, Menu, TreeView, Login, LoginStatus, CreateUserWizard, ChangePassword and PasswordRecovery). The CSS Control Adapters cause these ASP.NET controls to emit CSS friendly html output (eliminating things like inline styles and <table> elements), and can significantly help when using CSS on your web-site."