Backup Changes

My question is this-
Can I save changes to 2 directories at once,
ie, my primary storage drive and my backup?

I'm running Vista and have a second vista machine that i use as a network backup.
I would like to save changes to both machines at the same time, rather than have to backup the changes later.
Is tis possible?

No, only if you edit both files at the same time in Mp3tag.