If you ever find your columns or rows in Excel 2007 are too small or too large you can quickly adjustment by double clicking in between their headers. Like double clicking in between the Column A and B headers to do what's called and AutoFit in column A. Meaning that with the double click Excel's column will automatically adjust and fit to the largest amount of data it can find in any given cell within that column. You can also click and drag your mouse in between the header labels of the columns or rows to stretch a row or column, or you can right click on one of the headers and select Row or Column size and manually punch in a number and click ok.

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