Allowing users to edit ranges was added in xl2002--so it doesn't exist in xl2k.
You could unlock all the cells that anyone can change.
Or maybe provide some kind of macro that unprotects the sheet, locks/unlocks
cells based on a user, and then reprotect the sheet. (Doesn't sound like fun to
On top of that, worksheet protection is easily broken. Macros can be turned
off. It would be a pain.