Monica
There are two alternatives that are 'quick & dirty' that
you may want to consider. Both are from PKZip. You can
run PKZip from within Fox and do some good work. You can
also look at getting their compression library. PKWare has
been pretty good with licenses & such so that is a good
place to start.
If you need more ideas let me know & I will open my eyes &
see what I can for you.
Thanks
Tom