This article will explain how you can setup a Flash Intro on InstantSite
Scroll down to the Create your website section and click on the InstantSite icon.
Click on the Login button next to the relevant InstantSite package.
Click on the Edit link.
In the Site map panel, click on the Flash Intro page.
Select a design for your Flash Intro.
Under the Settings header you can click inside the field boxes to change the text for the following:
Use the drop down menus to change the background colour and animation pattern.
Click on the Save Changes button.