well, i don't use A2007, but it may be the same as how i might do it in
prior versions. split your db, if it isn't already split. on closing the
front-end, first close all forms that are bound to a table linked from the
backend db; that should effectively "close" the backend db (assuming no
other users are actively linked to the backend). then use the FileCopy
function to copy the backend db as your backup.