Hello, I have both Office 2004 & 2008 installed on an OS X 10.5 machine. I prefer using 2004 as I find it easier and faster to work with, but I like to keep 2008 around to be able to open the newer file formats. Anyway my problem is with Excel. After creating and saving a file in Excel 2004, it always tries to open in 2008 the next time I double-click on it. If I right-click | Open With, only Office 2008 shows up in the choices. I've tried manually associating the file to open with Excel 2004 several times, but it always eventually reverts to opening with Excel 2008. I'm under the impression that Office 2008 somehow "takes over" the file associations when you install it. I can't remember the order in which I installed them when I set up the machine. Although I open Excel 2004 and manually open the file, it would be nice if I could get the file association to persist. Any suggestions or thoughts? Thanks, --TMK.