[stflip]

It was fairly easy to do in Word 2003, but I have been unable to figure it
out for Word 2007. I want my document to appear as follows:

1 Heading One
Normal text Normal text Normal text

1.1 Heading Two
Normal text Normal text Normal text

1.1.1 Heading Three
Normal text Normal text Normal text

1.1.2 Heading Three
Normal text Normal text Normal text

2 Heading One
Normal text Normal text Normal text

2.1 Heading Two
Normal text Normal text Normal text

2.2 Heading Two
Normal text Normal text Normal text

2.2.1 Heading Three
Normal text Normal text Normal text


etc., etc. I cannot figure out how to number the headings in this manner.
This particular format (1, 1.1, 1.1.1) does not seem to be available from the
Word 2007 Number Format list. Any guidance would be appreciated.