You can also use a nice and easy frontend program like D-Fend to create profiles for ye ol' classic DOS games. It's not that hard at all and just takes a little experimentation. This is more for those who don't like getting into the nitty gritty of DOS commands.
You can get it from here:
http://emulationrealm.net/modules/wf...at.php?cid=219
I think it does help to have a decent rig though to run some games on high cycles. I can't get Stonekeep to operate smoothly enough as to be playable in DOS-box unfortunately.
Having a spare classic games machine as Secretmaster says, is definitely a blessing here.