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I am a web programmer.
I would not recommend a flash-based site for this type of business. The search engines can't read the text so you don't get picked up as quickly. A more simple html-based approach is easier to update and better for you in the long run. You don't get all the transitions and sound track, but those detract from your purpose, in my opinon.
If it's not too late, I'd ask the designer for a simpler html-only site that you could update with a program like Macromedia's Contribute.