In order to use a DOS program, you need to run it on an Operating System that allows the DOS program to access your computer hardware. Word to the wise: Do -NOT- use Microsoft Windows XP to run DOS programs! And to everyone else: Do -NOT- use Microsoft Windows XP to run DOS programs! ----- The best Operating System for running DOS programs is IBM OS/2 WARP. With the exception of tools intended to manipulate the file system (and WARP comes with its own suite of tools for the job), I have NEVER encountered a DOS program that did not run flawlessly on WARP. If for some reason you can not aquire a copy of WARP, then your next best choice is one of the Disk Operating System varients based on IBM/Microsoft PC DOS version 5.0 or later (sorry, Microsoft will no longer help you with anything related to DOS, even if you previously had a paid contract with them for support). ----- This "Disk Operating System" directory includes a custom DOS boot diskette I created, the "mandatory" QEMM memory manager, and a replacement CLI, Batch Interpretor, and GUI. Run them all together to experience just how powerful DOS can be. .