2 dos prompts available in XP

In Xp we have to different versions of DOS
1.command.com
2.cmd

type command.com or cmd in Run to lauch each version respectively.

command.com is earliest version and cmd is latest version
you may not get every facilities in older version.Eg if u want to execute previous command in cmd we use UpKey and we get all the previous commands.But this is not possible with command.com

Try them and you may get some more difference.But it is kept because some programs may still require old dos to run