Little Black Book may be run from the CD-ROM if you use the SET
command and the environmental variable LBBK to tell it where to
create its data files.

For example: SET LBBK=C:\BLKBK <return>

will cause LBB to create the database and index files in C:\BLKBK.

As an alternative, you may simply copy all the files in this
directory to a hard or floppy disk and run LBB from there.