This build does not have PS/2 mouse support. You can either run an emulator that has Microsoft Serial Mouse support, Or replace MOUSE.EXE with the Windows 1.0 Premiere Edition MOUSE.EXE. For high EGA Color, select, Enhanced Graphics Monitor with Enhanced Display. For this to work, you can have: MS-DOS, or PC-DOS 2.X or 3.X, DOS 5.X/6.X but once you downloaded 1.0 Beta, add SETVER WIN100.EXE 3.30, and DOSbox: run ver set 3 30.