A lot of old DOS games won't work properly in Windows, especially when it comes to sound.
However, DOSBox (
http://dosbox.sourceforge.net) is a nice little program that provides a better emulated DOS environment, as well as sound support, for older games and programs. It's the same program Sierra employed in their re-release of all the Space Quest, King's Quest, Police Quest, and Leisure Suit Larry games so they'd work in Windows.
DOSBox is a DOS-emulator that uses the SDL-library which makes DOSBox very easy to port to different platforms. DOSBox has already been ported to many different platforms, such as Windows, BeOS, Linux, MacOS X...
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...
You can "re-live" the good old days with the help of DOSBox, it can run plenty of the old classics that don't run on your new computer!
DOSBox is totally free of charge and OpenSource.