Charts in Excel

Thank you. I have an excel table to convert into a graph. It compares the baseline figure as it was at the end of September 2009 with the figures at the end of each subsequent quarter. The x axis is the quarters; the y axis is the quantity (actually the number of pages in documents issued). So there is one flat baseline and one rising and falling line. But I want both to begin at the left hand side of the table. If the data point is the problem, could I state it differently to get the desired result? I know that a previous team member was able to do this. If I could email you direct I could send an example.