DOSBox a DOS-emulator using the SDL-library makes DOSBox easy to port to other platforms. DOSBox has been ported to many platforms including Windows, Linux, Mac OS X, and BeOS.
DOSBox also emulates CPU:286/386 realmode/protected mode, Directory FileSystem/XMS/EMS, Tandy/Hercules/CGA/EGA/VGA/VESA graphics, a SoundBlaster/Gravis Ultra Sound card for excellent sound compatibility with older games.
DOSBox can help you "relive" the good times. It can run many of the classics that aren't available on your new computer.