Instead, install a modern, free office suite in Portuguese today. Your future self will thank you.
The archive likely contains:
For a system administrator in 2008, this file was gold. Installing from this file meant that once the software was installed, the computer would not need to spend hours downloading updates from Microsoft Update. It was a "plug-and-play" solution for a fully patched, secure system. Office 2003 SP3 PT-BR Atualizado 09-2008 .rar