Microsoft announced its Document Interoperability Initiative and the release of version 1.1 of the translator between ODF and Open XML for Microsoft Excel (spreadsheet) and Microsoft PowerPoint (presentation) applications.
Press release: Microsoft Launches Document Interoperability Initiative
The odd thing is that nothing in the press release tells you how to actually find this translator. It’s on SourceForge and here’s where you can find it:
If you head over to its download page, you will find individual add-ins for PowerPoint and Excel. Although both were mentioned in the March 6 press release, the Excel add-in has a Dec. 4, 2007 release date attached to it and is listed as version 1.0, not 1.1. The PowerPoint add-in is version 1.1, however.