Yes, you can easily start the line graph at 0 on the x-axis instead of 1. Here's how you can do it in Microsoft Excel 2003:

1. Select the data range that you want to create a graph for.
2. Click on the "Chart Wizard" button on the toolbar or go to "Insert" "Chart".
3. In step 1 of the Chart Wizard, select the chart type you want to use and click "Next".
4. In step 2 of the Chart Wizard, select the "Series" tab.
5. In the "Category (X) axis labels" section, click on the "Category (X) axis crosses at" option and enter "0" in the box.
6. Click "Next" and then "Finish" to create your graph.

Your line graph should now start at 0 on the x-axis instead of 1. If you want to make further adjustments to your graph, you can use the formatting options in the Chart toolbar or right-click on the chart and select "Chart Options".