Google Doc

From my class, I just discovered that Google has an app called Google Doc which gives you access to basic features of Microsoft Word, Excel, PowerPoint. This is a very useful web-app. In my computer, I only have Microsoft 2003 and sometime my professors send me word or excel files of the new version 2007. Of course I could not open the files with my Microsoft 2003 in my computer. But I could use the Google Doc to open it and transfer to Microsoft Word or Excel 2003 files. In fact, if your computers do not have Microsoft Office at all, you can just use the Google Doc to create word or excel files.