Smiling out from your computer screen, Dominique licks her lips, strikes a pose and invites you to “get interactive.” You’re the “virtual photographer.” You click on the camera icon, zoom in and shoot. Later, you can order Natalie to pump iron, or click on the “strip naked” feature and snap Julie sprawled on the ottoman. At the end of your session, you print out your favorite images. Penthouse’s newest product is brought to you via CD-ROM, the computer-readable compact discs that enable users to manipulate masses of video, audio, text and graphics. It is part of the revolution that has inspired optimistic talk of a digital golden age.