multie program boot flash drive

im trying to creat a multie flash usb drive, this is what i want to do if anyone knows how.
i want it to boot into dos with a menue consisting of a number of different programs. im stuck ived tried partitioning drive to have multiple drives but only the primary is shown in windows enviroment.
now im looking into this option,
i want to beable to choose between using hirens software and spinrite allso active boot disk creator there all dos programs.dont know how to creat a script somthing like this
1.run active boot drive
2.run hirens
3.run spinrite

run [ ]

thanx in advance