Only other option to encryption: move to a different back-end (SQL Server, MSDE, Oracle, etc.)

>I have 3 applications that are about to go live (2 weeks from today and all have VFP Databases for a backend). It turns out that our systems department is handing over in the new PCs VFP 7 to all the users. I there a way to protect the files from intrusions outside the applications other than encrypting??