You can get Office 2003 SP3 as an executable file from Micro$oft. Quite big, about 120MB.
Very handy if your copy of Orifice 2003 does not pass the Windoze Genuine Advantage test
I am sure SP4 will do a WGA check before installing, but currently you can get all the Orifice 2003 updates all in one go just by getting this service pack.