macro to update multi user file

re-poting this here as not many of you were reading this under Excel General

Hi, need help here guys.
At work we have a excel spreadsheet with lots of hyper links saved on a network drive. Every so often we need to update the links + info on this. All users have a link in their start up to load this on their pc. Users can make changes to the file on their pc but not master copy.
Problem, when the master file copy is updated, I need to know how to install the latest version of spreadsheet in each users start menu by sending a link, probably a macro command but I'm not sure or have the expertise for this. Will appreciate your help on this
Ps excel 2003 at work but have 2007 on home pc

Save the master with password and set for open as read-only.
The all copies opened by others will be read-only (as wont know the master password) if they want to save it they will have to save-as as they wish.
When you update the master, never change the file name, so the link/shortcut used by others will remain effective.