Hi Pierre,
There is no provision for this in Excel.  (You can do this in Microsoft Word)
You can do this with the help of a macro in Excel or an addin
Macro solution on my page:
  http://www.mvps.org/dmcritchie/excel/snakecol.htm#snakecols

To show 13 columns of data, printing portrait you will probably only be able
to fit about 3 characters of data per column with a appropriate 2 characters of
spacing between columns, if you want to print to 13 columns (25 columns total)
unless you print landscape.

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HTH,
David McRitchie, Microsoft MVP - Excel    [site changed  Nov. 2001]
My Excel Pages:  http://www.mvps.org/dmcritchie/excel/excel.htm
Search Page:        http://www.mvps.org/dmcritchie/excel/search.htm