Does MS Office install preserve data in existing MUD folder?

1) I am running Office 2004 on a 500Mhz G4 PB with 10.4.10. I want to
un-install Office and then re-install it to see if it resolves a
problem. I use Entourage calendar and want to be sure I retain that
and other data in the database file "Office 2004 Identities/Main
Identity/Database" in the MUD folder. That data was retained when I
upgraded from the previous office version, but uninstalling and re-
installing is a bit different.

2) When I re-install, can I re-use the original product key or must I
use one of the other two?

Thanks

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