XHTML*

But yeah, what Mike said.

You probably put a lot of work into the Flash on the site but it gets old extremely quickly and honostly it's annoying. Ask yourself if there is any specific reason you need to use Flash for all of the content. It's quite an inconvenience on many, many levels - not just for people browsing, but for you. People shouldn't have to learn to use your content layout.

Besides that, it's obvious you're trying to make a good site. If you want to use Flash to add interesting (but non-essential) stuff for the site, that's a little better. But using it for everything is just an awful idea (unless there's a specific reason to or if it's exceptionally well-made).