Since installing MS Office 2003 last year I have noticed different
behavior with working on multiple sheets.

First, every new sheet I open or create causes a new instance of Excel
to open. Standard Excel 2003 behavior? Or do I have something
configured incorrectly?

Next, I worked on an existing workbook named '200501.xls' yesterday.
While adding data to that workbook I created 11 additional worksheets,
renamed the tabs and saved it with the same filename.

Tonight I looked at that file in Windows Explorer and saw that it is
only 13 kb in disk size.  I knew that could not be correct.  Then I
noticed a folder there in that subdirectory that I had not actively
created, named '200501_files'.  It contains 12 workbooks named
Sheet001.htm, Sheet002.htm, etc.  There is also a file named
'stylesheet.css' and one named 'filelist.xml'.  I realized that the
Sheet files represent the data for the worksheet tabs I created in
'200501.xls'.

Which means that as long as I want the original Excel file to stay
intact, I must keep this folder as it contains all the data for that
workbook.

Why did Excel create the sheet in this fashion?  All previous versions
I have used did not add worksheets in this manner.  All used to stay
in the base XLS file; CSS stylsheets and XML files were never required
in the past.

Again, is my Excel version configured incorrectly?  Or is this just
how Excell handles all multi-worksheet workbooks now?

Thanks for any assistance with this.

--
J-Mac