We usually use WinRAR, as it can be controlled externally and generate a list of included and checked files.
We also used the zip implementation of dfPUG - wrapper around compiled C code of zLib. If you are not a member, I think 50$ cost, but optionally wrapped into a vfp GUI if you/your customer need that

HTH

thomas

>Not your problem!
>
>I'm surprised by your answers, yours and Tamar, stating that it is not your problem.
>
>In my case I don't see how we could say to our clients that it's not our problem. The apps are remote desktop so our clients don't have direct access to the data because of the remote thing. So we have to provide backups.
>
>
>>>Anyone have a similar approach? Even is your approach is different, how do you do your backups? Web service that you pay monthly? Zip the data and store it somewhere with FTP?
>>
>>Have the backup clearly stated as the responsibility of the user in the contract. Not my problem thereafter.