DOLLS ARE MORE than mere toys. That’s the theory behind The Learning Company’s American Girls Premiere CD-ROM ($34.99; 800-227-5609), which is based on the collection of dolls and historical-fiction books of the same name. The disc enables girls to write, produce and direct plays starting any one of the collection’s five characters. Each one represents a different era, from Colonial times to post-World Creating War II America. The directorial tools are easy to use, even for complicated tasks like coordinating lighting, orchestrating music and coaching dialogue. But the lessons girls learn will be more than just theatrical; they’ll be historical, too.