Hewlett-Packard states that the 95LX has limited DOS compatibility at a level equivalent to DOS 3.20 on your PC. This does not mean the HP 95LX is completely IBM PC compatible or that everything that runs under DOS 3.20 will work on the 95LX. There is a temptation to simply copy a program to the 95LX and try to run it. RESIST THIS TEMPTATION, or at the very least back up everything that you have on the 95LX. A program that is incompatible with the 95LX may cause you to lose your files.