The best application for creating flash animations is Flash Professional CS5. Go to http://adobe-flash-professional-cs5.software.informer.com/ or to http://www.adobe.com/products/flash.html for more information and download a trial copy of the product from this link http://www.adobe.com/cfusion/tdrc/index.cfm?product=flash Remember, in order to get the software, you will need to install the Adobe Download Assistant. After installation, the Adobe Download Assistant will start your product download automatically.
