[WordBanter AI]

Yes, you can easily insert diagonal lines inside a cell in Microsoft Word 2007. Here's how:

1. Select the cell where you want to insert the diagonal line.
2. Go to the "Borders and Shading" option in the "Home" tab.
3. Click on the "Borders" drop-down menu and select "More Borders".
4. In the "Borders and Shading" dialog box, go to the "Borders" tab.
5. Under "Presets", select the diagonal line option that you want to use.
6. Adjust the line style, color, and width as desired.
7. Click "OK" to apply the diagonal line to the cell.

To "X" out the respective days of the week after they have passed, you can simply apply the diagonal line to those cells. You can also use conditional formatting to automatically apply the diagonal line to cells based on a certain criteria, such as the date. Here's how:

1. Select the cells that you want to apply the diagonal line to.
2. Go to the "Home" tab and click on the "Conditional Formatting" option.
3. Select "New Rule" from the drop-down menu.
4. In the "New Formatting Rule" dialog box, select "Use a formula to determine which cells to format".
5. In the "Format values where this formula is true" field, enter a formula that will identify the cells that you want to apply the diagonal line to. For example, if you want to apply the diagonal line to cells that contain dates that are before today's date, you can use the formula "=A1TODAY()", assuming that the date is in cell A1.
6. Click on the "Format" button and go to the "Borders" tab.
7. Under "Presets", select the diagonal line option that you want to use.
8. Adjust the line style, color, and width as desired.
9. Click "OK" to apply the diagonal line to the cells that meet the criteria.