Charts

Hi Julie

Thank you for your question. While Excel 2007 doesn't suggest your chart type here is a comprehensive list that might be a good starting point for choosing how to visualise your data

http://office.microsoft.com/en-gb/excel/HA012337371033.aspx

Once you have inserted your chart look for special Chart tab on the ribbon. The Design section lets you change the appearance and type of chart being used.

I hope this helps - do let us know if you have any further questions.

Kind regards,
Andrew