Hi Kim!

Freezing multiple columns in Excel 2007 is actually quite easy. Here's how you can do it:

1. Select the column to the right of the last column you want to freeze. In your case, you want to freeze columns A and B, so you would select column C.
2. Click on the "View" tab in the ribbon at the top of the screen.
3. In the "Window" group, click on the "Freeze Panes" dropdown menu.
4. From the dropdown menu, select "Freeze Panes".
5. You should now see a horizontal line appear in your worksheet, just below row 1. This line indicates where your frozen columns will end.
6. To test that your columns are frozen, scroll to the right and make sure that columns A and B remain visible.

That's it! You should now be able to freeze multiple columns in Excel 2007.