This program requires: 1) 386 or better processor 2) Microsoft compatible mouse and driver 3) VGA graphics card If you have trouble running it under your usual configuration I suggest trying from a bootable floppy disk with only a mouse driver loaded. For instance use FORMAT A: /S to create a bootable floppy disk. Copy your mouse driver to the disk. copy QUAKE.EXE QUAKE.QAK and MAP.TXT to the disk. Don't use any CONFIG.SYS or AUTOEXEC.BAT files. Boot the floppy disk, start the mouse, then start QUAKE.EXE. You can also try running it from Windows 3.1. Have fun...