I don't remember how to set config.sys and autoexec.bat files. It's been too many years now since I last did it, at least 25. I remember that I did a thousand tests to free up as much low memory as possible and in the 90s I did very well. What I really don't remember is how to install / load the drivers for the IDE CD-ROM drive, the IBM PS / 2 mouse (I found that dune2 doesn't see my mouse) and the Sound Blaster 16 value. Can someone refresh my memory or give me some links to read? Thanks, I remember so little that I can't even find the posts where it is mentioned. tnks