Seems that one of the patches that got installed recently, either this month
or last month, has changed the default file association for opening office
2007 files on computers that have office 2003 installed along with the 2007
compatibility pack. Since I support alot of computers it would be nice if
there was an easy and simple method for changing the file association for
..xlsx, docx, xlsm, etc for multiple computers.
The error message that I get when trying to double click a 2007 file to
make it open in excel 2003 is: "Windows cannot find <filename>. Make sure you
typed the name correctly, and then try again. To search for a file! , click
the start button, and then click search."