In article , joeu2004
writes
I'm sorry: apparently that is __just__ SP3. It might presume you already have the
base Office
Compatibility Pack. See http://www.microsoft.com/en-us/download/details.aspx?id
=3.

Similarly, if and when you get around to installing SP3, see
http://www.microsoft.com/en-us/downlo
ad/details.aspx?id=27836 instead of the KB that I pointed you to.


Thank you for your kind help.

I did download and install these :

Microsoft Office Compatibility Pack (FileFormatConverters.exe)

Microsoft Office Compatibility Pack Service Pack 3 (SP3)

and also

Excelviewer.exe

It's just that I don't see anywhere within excel 2003 to save as xlsx if
I open a workbook and try to save in this format.

I tried also via VBA , and this too gives errors at the use of .xlsx as
a file type.

Having installed these compatibility programs , how to do I save in this
format form with excel 2003? I can't see any way at the moment. It's not
in the Save As dialog.