CS3 was the first version released after Adobe’s acquisition of Macromedia, leading to significantly tighter integration with Adobe Flash . Designers could now define symbols in Illustrator as movie clips for Flash, complete with 9-slice scaling and registration points. It also introduced New Document Profiles, which pre-configured settings for Print, Web, Video, and Mobile workflows.
Since CS3 only supports a single artboard, you must set the dimensions correctly from the start. adobe cs3 illustrator