A great boot CD of a free DOS OS. FreeDOS is an open source project to provide all the features of MS DOS (I think). The easy to burn ISO on this site works quite well. This CD is great if you don\'t have a floppy drive anymore, thus rendering all of your precious boot disks useless. =)
http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/ripcord/beta8h01/
Boot floppy that will then boot from CD (for PC's who's BIOS won't boot from CD for some reason)
http://hardware.slashdot.org/comments.pl?sid=1634292&cid=32014350