There was a big brouhaha that Flash had become search engine indexable and you no longer had to worry about its search engine issues. Frankly, I have not seen the fruits of this 'improvement' to a respectable degree yet so I still consider it a kiss of death for websites designed solely in Flash.

If you have a Flash-only website then I recommend one of these two options; one is to design an html version of your website and make the home page of your website html rather than Flash where you can then allow users to choose between html or Flash. The second option is to redesign the site so that it mixes both html and flash together.

For example, this might mean implementing Flash amidst content on an HTML page as you would an image. I realize there are certain limitations to this option but if you can create a slick site in this manner then you will have the best of both worlds; clean search engine friendly content along with an interactive, multimedia feel.

Just remember that the majority of relevant text should be in HTML format for the search engines to index.