The Caillou Learning 3 PC Disk is a preschool education software set by Cosmi designed for early learning. The CD format is suitable for children to learn essential skills in English language. With a minimum of 64 MB RAM and less than 50 MB hard drive space, this academic/education software is compatible with Windows operating systems. The set includes all the necessary tools for young learners to be prepared for school and improve their language skills. Feel free to ask questions or send offers. Thank you for looking.