Thank you very much for this! Your work is really helpful to the portuguese software preservation/retro gaming community. Sadly most of these updates were lost time and this is the only place where we can find them as of now.
A few weeks ago I also found this Portuguese Multilingual User Interface Pack for Server 2003 64 here: https://vl463l.s.cld.pt
It also installs on XP 64 but only translates some UI elements while the rest stays in english. Not sure if it's worth something or if you already got it but it's here. Feel free to add it to your updates repository.
Once again, thanks very much for providing us this rare updates in the Camões language :D