The way I update the programs and files goes like this :

I create a new exe file, compress it and copy it onto the floppy disk. Then if the databases have been
updated, I copy the new database structure onto the floppy and rename it beggining with "U" eg.
names.dbf will become unames.dbf. Then I modify my start program with the following code :

clos data
use names exclusvie ** to check if the names file is available.
if file("unames.dbf")
use unames
append from names
clos data
copy file unames.dbf to names.dbf
erase("unames.dbf")
endif

Then I copy all the file from floppy to the clients computer and run the program
But there may be other simple ways to do the job.