I have installed office 2007(XP) in my computer, I still need some of my 2003
excel and word file, so the conversion pack was installed and everything
worked fine for a while, but now when I try to open older version of 2003
excel files that were modified I get this message:the file you are trying to
open is in a different format than sepcified by the file extension, verify
that the file is not corrupted..... It seems that all files created before
installing 2007 still work fine, but when I open one, modify it and save it,
I will be able to open it one day and then the next I get the same message. I
tried in different computers, but it seems that once the file has been open
and I get the wrong file exetnsion message, it won't work in any other
computer. Is there anybody who can help me recover, or re-open those files?