Hmmmmm,

Unfortunately, I don't think anyone will be able to help you much. By the time Office 2002 (XP) and 2003 were released, Microsoft had hardened the security somewhat, so the common work arounds don't work anymore.

All I can suggest is:

1. Try the obvious: password, Password, PASSWORD, PassworD..........
2. Look at the project documentation. You might even find a listing of the macro?
3. Ask the person who signed off the project to go into production if they know.
4. Try to contact the author.

After that you will have to buy a tool that will do the job, or send it to a specialist company.