We have been asked how a library might migrate from the MS-DOS operating system to OS/2 if the latter product begins to displace the former. According to Microsoft Corporation, OS/2 can be run on any 286-based system, but for optimum performance a 386-based system is recommended. Using a 386-based system with an EGA board and multi-scanning monitor, a 40-megabyte hard drive, and 1 megabyte of RAM as the base configuration, upgrading to OS/2 with the Presentation Manager would require 4 Megabytes of RAM at $1,500; a Mouse at $90; a VGA Board and Analog Monitor at $750; and OS/2 with Presentation Manager at $250; for a total of $2,790.