Incremental Backups to Zip

Hi,

This is what I want to accomplish:

I want to run an incremental backup to a zip file, all I want in the zip is the changed files every day.

I tried Fastback based on archive bit, made a new file in the source directory, and ran it. It copies all the files in the zip because of course none of the files are there. When I watch it run, I see it picks up the changed file but it wants to copy everything over....

Is there a way to get a zip everyday of just the changed files for the day based on the archive bit?

Thanks for your help.

Infodine