altBrowser for Mac

[Chipp Walters]

Edwin,

Yes, I'm pretty sure you can add a file to a zip, but I believe it takes 
some time as the zip must first be uncompressed before adding to.

Of course you can zip and unZip folders --with or without their 
hierarchy maintained.

You can also zip and unzip to files which don't end with .zip...which 
can be handy for an archival format...or a skinning file.

best,

Chipp