I want to apply a theme to one or two pages in my Web site

By design, you apply themes to an entire site. If you want to apply themes to individual pages or to further customize your Web site based on Windows SharePoint Services in any way, use a Windows SharePoint Services-compatible Web page editor, such as Microsoft Office FrontPage® 2003.

Note  To apply a theme, you must a member of the Web Designer site group or a site group that has the Apply Themes and Borders right.