Those are two different dimension limits,   remove the 99,  from your
   1 pages wide by 99 tall
if you would have printed more than 99 pages your sizes would have been
reduced and that includes the width..

Excel will squeeze printing down but it will not expand it to fit width
of page.

If you are not printing gridlines or borders turn on gridlines so you can
see if you are actually printing empty cells.

Always test in print preview  so you don't waste paper

Use  Ctrl+End to find the last cell if that is further to the right
of your data then you have a problem with lastcell; likewise, if it is further
down than your data you would also have a last cell problem but you are
only mentioning the width.

To correct a last cell problem see
   http://www.mvps.org/dmcritchie/excel/lastcell.htm#makelastcell

Fit Print to Page, and Adjustments to Layout
: http://www.mvps.org/dmcritchie/excel/fitprint.htm
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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