File partitioner is a little application used to break a large file into a set of smaller files. Navigate to the file you want to break up, select the size you want the fragments to be. 1.38MB is usually the best choice if you want to save a big file on multiple floppy disks.
Click create partial files, and in the same directory where the big file is placed will be generated files of the size of your choice, plus a .bat file to recreate the original file. Remember to always distribuite the .bat file together with the partial files!