System 7.5.3 is available as a retail package and offers an easy method to update to that version of the System. If your Mac already uses System 7.5.X, you can update your System with update software from Apple. The book The Internet Starter Kit for Macs includes the Mac System Update. Older CDs included with the magazine MacAddict i nclude the Mac System Update. May be available as back issues from the publisher.
Current issue is available on newstands or by subscription.
However, the Internet Setup Assistant offers an easier method. Mac OS 8 Dial-up Networking. Follow the instructions provided with your Mac System software to start up the System installation software. Click on the Install button. Restart your computer and follow the configuration instructions below.