I think you should gather many related links as you can and make an html of that flash site of yours and optimize it...
Some Info: "Flash is often used on home pages as a "splash" page. The problem with these splash pages is that many times they are made entirely from Flash, which the search engines can't index. That means your splash page will not get listed. Your best bet search engine wise is to avoid submitting any page that is made mostly of Flash. If you must submit a page that is mostly Flash you can improve your chances of getting listed by to adding as much page copy to the page that you can. You should also make sure you have good meta tags and title tag."
