The only real reason to use flash is for the web, as it's a vector-based programme which is good for reduced file sizes. If it's ending up on DVD, filesize doesn't matter. I believe Adobe AfterEffects is the weapon of choice http://www.adobe.com/uk/products/aftereffects/?sdid=BYDIK and Sony Vegas is also worth a look, although that's more video editing - http://www.sonycreativesoftware.com/products/vegasfamily.asp