Quickoffice is a program that comes with all Nokia E-series cell phones. Unfortunately, its current version doesn´t support Office 2007 documents, so you would need to purchase an additional update. Or so it was until now. The good news is that owners of E51, E52, E55, E63, E71, E72, E75 and E90 devices can now update to Quickoffice 6, completely free of charge. The new version, already available for download, allows opening and editing Office 2007 files without any issues and also features integrated support for ZIP archives, password protected files and Excel 2007 charts. Future upgrades are expected to bring along PowerPoint 2007 and multilanguage support (as of now, the app is only available in English)
Source:
Quickoffice via
The Nokia Guide