Well, you have to customize & optimize your flash so that Google crawler can easily crawl it, you should mention your major terms and keywords while customizing your flash .... Search latest trends on Google of optimizing flash content at any website ..... Let me know Thanks
A recommended Flash SEO method uses search-engine-accessible, primary content, and a little Javascript to detect when browsers are capable of viewing Flash. When a Flash player is present, the Javascript uses the page’s document object model (DOM) to replace the primary content with the Flash movie. Most search engine spiders can’t handle Flash, so they will view the primary content. The primary content may contain links, headings, styled text, images — basically anything that can be added to an ordinary HTML page. With SEO applied to the primary content, use of Flash becomes a non-issue.
Flash website can be never seo friendly for search engines, it will be difficult for any other search engine to crawl the flash website and even though you customize it.