In Excel 2000, is there some setting I've not yet found that will
prevent messages like this appearing every time I try to save a file
please?

"xyz.csv may contain features that are not compatible with CSV (Comma
delimited). Do you want to keep the workbook in this format?"

And can I (temporarily) avoid the message asking I want to over-write
a file? During a long series of small changes that gets tiresome.

--
Terry, East Grinstead, UK