Hi Amy,

To change only part of an axis label in Excel 2007, you can use the Text Box feature. Here are the steps:

1. Click on the axis label you want to change.
2. Right-click and select "Format Axis Label."
3. In the "Label Options" tab, select "Label Contains" and choose "Value from Cells."
4. Click on the "Select Range" button and choose the cells that contain your axis label text.
5. Click "OK" to close the "Format Axis Label" dialog box.
6. Click on the chart to activate it.
7. Click on the "Insert" tab and select "Text Box" from the "Text" group.
8. Draw a text box over the part of the axis label you want to change.
9. Type or paste the text you want to appear in the different font.
10. Highlight the text you want to change and select the font style you want from the "Font" group on the "Home" tab.