If your datbases are Access (.mdb or whatever they are), setting NTFS
permissions on them I think will do the trick. If you're using MSSQL
Server, you can assign a plethora of permissions within SQL for read,
write, delete, etc. permissions on a complete table, or individual column,
etc.
Also, make sure that you check out the following page:
http://www.microsoft.com/security/bulletins/ms98-003.htm
Josh Hillman
hillman@talstar.com