Microsoft quietly has released the latest service pack 1 for Office 2003 suite. Going to the office update site.
Try the Update
Build numbers after SP1 installation
Outlook 2003 (11.6359.6360) SP1
Word 2003 (11.6359.6360) SP1
Excel 2003 (11.6355.6360) SP1
Access 2003 (11.6355.6360) SP1
InfoPath 2003 (11.6357.6360) SP1
PowerPoint 2003 (11.6361.6360) SP1
Publisher 2003 (11.6255.6360) SP1
Unfortunately at the time of this posting the automatic update is not working. I will keep trying later on.
A standalone version has yet to be released.