I need some Help please

I have a client, whos client (I’m working as a subcontractor) wants a flash based splash page but with the rest of the content in D/HTML. This being said what would be the best way to accomplish this? Would you sugest using action script to unLoad the .swf, which I would have embeded in a floating box/window above the content of the main D/HTML Document (Or for that matter goTo and unLoad the D/HTML Document.)???
Or would it be prudent, to use an enter button linked to load the D/HTML Doc.???

Thank You for any insight that you can give me on this.