Jeff,   Straight from the ReadMe.txt:* If you want to clear this setting on the particular client machine then enter this url
  in a web browser and delete the website from the website storage list
  http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html
  This action is just clearing the shared object cache for that site.
Also from the ReadMe.txt Change the SplashWidget.xml    My SplashWidget version 2.2 for FlexViewer 2.x is a widget that take the principle of the standard splash widget in the
viewer and turns it into a Flex TitleWindow and allows for multiple buttons to be added. The buttons can have one of three
predefined actions: close, redirect, link.
    <buttons>
        <button label="Agree" action="close" url="" />
        <button label="Disagree" action="redirect" url="http://mysite/noaccess.htm" />
        <button label="Home" action="link" url="http://mysite/home.htm" />
    </buttons>
Don't forget to click the Mark as answer check and to click the top arrow (promote) as shown below: