Under Vista:
Excel2007
I zipped an Excel2003 File (Excel2007 saved it as Excel2003 File).
Opend the ZipFile (under Vista) - Tried to open the Excel File (Excel 2007).
Excel 2007 tells me File is corrupt.
But Excel is able to repair it.

Sent the zipped Excel File to my XP-PC - Tried to open the file with Excel 2003. File was corrupt. Excel 2003 was not able to open it any more, although it was in Excel2003 Format

To test the FLL routines I will pack an Excel2003 File (from my XP PC) under Vista. If that does't work, I will inform you (and the author).

Thanks

Marcus