The header says it all. I tried a "patch" or converter I found on the Microsoft web site and installed it, but I get errors that there is not enough memory to open the application. The particular file I am trying to open is an excel file created using a beta copy of MS Office 2010. Office 2003 is a certified, activated, registered release. Is there a file converter for this or do I just have to wait until Microsoft comes out with the final release? Really, I wish there would be SOME backward compatibility with Microsoft's Office products. It seems that whenever there is a new version, we have to upgrade or we can't open documents sent to our offices just because somebody spent the money to upgrade their versions. This is getting crazy!