Excel version???
Excel adds an extra column, because your data does not fit the entirely page. To change this, you have these options:
OPTION1: Center the data on the page
• Open the PAGE SETUP dialog box
EXCEL 2003: From the menu bar choose FILE >> PAGE SETUP
EXCEL 2007/2010: From the Ribbon choose the PAGE LAYOUT tab. On the PAGE SETUP group click the small arrow in the lower-right corner of a group,
• Choose the MARGINS tab
• At the bottom Under the CENTER ON PAGE group, mark/check the boxes before HORIZONTALLY and VERTICALLY
• Click OK
Now print and the extra column wont exist and your document will be center on the page
OPTION2: Change your columns width to fill the page width
• Excel 2003: http://spreadsheets.about.com/od/excelformatting/ss/widen_col.htm
• Excel 2007/2010: http://spreadsheets.about.com/od/excelformatting/ss/2007-09-06-change-column-widths-excel-2007.htm
OPTION3: Change your margins width
Excel 2003: http://www.jegsworks.com/Lessons/numbers/basics/step-margins.htm
Excel 2007/2010 http://www.dummies.com/how-to/content/how-to-change-the-print-margins-in-excel-2007.html
OPTION 4: Change your font size
EXCEL 2003: http://office.microsoft.com/en-ca/excel-help/change-the-font-or-font-size-HP001190641.aspx
EXCEL 2010: http://office.microsoft.com/en-us/excel-help/change-the-font-or-font-size-in-excel-HP001216423.aspx
http://www.dummies.com/how-to/content/how-to-change-excel-2010s-default-font-and-font-si.html