I've created a chart and right now for my legend it says series 1, series 2, series 3 and so on.....I want to change it to an actual word like Kathy, John, Robert and so on.

My x-axis should show the years 2010, 2011, 2012, 2013 but instead it says 1,2,3, and 4. How do I correct this? I have Excel 2007 and I can't click and rename it.