I would first establish if these files are saved in the Excel 2007 format by either sending them via email to someone with Excel 2007 or putting them on stick memory, then taking them to a machine with Excel 2007, opening the files, and saving them in the 2003 format--if done via email, have the person send the files back to me saved for sure in the Excel 2003 format
You could also open them with Open Office and save them in the Excel 2003 format, if this is possible with Open Office or any other program other than Excel that will work
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