In Excel alignment is important to be able to easily read data. Learn to format text and tables in various ways in Excel.
You've probably noticed by now that Excel 2003 left-aligns text (labels) and right-aligns numbers (values). This makes data easier to read.
You do not have to leave the defaults. Text and numbers can be defined as left-aligned, right-aligned, or centered in Excel 2003. The picture below shows the difference between these alignment types when applied to labels.
Text and numbers can be aligned using the left-align, center, and right-align buttons of the Formatting toolbar: