At least on the Palm OS. That's because DataViz has released Documents To Go 10, a mobile Office suite known for its ability to view and Microsoft Office documents, even PowerPoint presentations.

Recent versions of Documents To Go, including this tenth incarnation, boast a feature that eliminates a time-consuming step. It allows users to edit native file formats. There's no need to convert that book report into a special format to open it on a supported smartphone or PDA, and vice-versa when doing the same on a computer.

There is support for Office 2007 documents, but unfortunately this is only limited to viewing. You'll have no problems editing documents created by earlier versions of Office though.