Best fit lines in Excel 2003

I am facing problem with line adjustment in Excel 2003. There are around 30 Data in a spread sheet. Now the lines that are listed shows different size. I cannot fit them all to make a common size. It looks a bit separated kind of data on the spread sheet. I want some way to make it a common size. I had gone through Excel help to find the settings but it looks there is nothing much listed on it. Can anyone guide me for the same.

Are you asking about giving a common size to each Excel row. You can do that. You can do that by right clicking on the row and there you can find a option to adjust row height. Just press all the rows by holding shift or simply press Ctrl + A. It will select everything. In the row height section type the size and then hit enter. It will adjust a common size to all.