Can anyone explain to me what happened to the rounded corners option in Excel 2003?

I have an old file with charts where I made the corners rounded. If I make a new chart from the same data in same file, I no longer get the option to make the corners rounded.

Also if I make a brand new excel file and make a chart, I cannot give it rounded corners.

Under help; about MS Excel it says;

Excel 2003 SP1
Part of MS Office Professional 2003


Thanks
Jeff