In Word 2007, there appears to be no way to tell paragraph numbering to use four digits at all times. So, I've tried the old fallback of using "000#" for the first ten paragraphs (with the start value defaulting to 1), "00##" for the next ninety (setting the start value to 10), "0###" for the next nine hundred (setting the start value to 100), and "####" for any following that (setting the start value to 1000).
Each of these is set up as a different numbering format, and the initial paragraph is being set to be a "new" numbering sequence.
Unfortunately, every time I start a "new" numbering sequence -- i.e., the "00##" for the tenth paragraph, since, thanks to the rest of this rant, I can't get it to go any further anyway -- Word insists on changing all of the indentations of the paragraph so that the number is "hanging" and the paragraph loses an inch off the left margin.
And when I fix all of the paragraph nonsense, Word automatically REJOINS the new numbering to the initial one, DESTROYING THE NEW NUMBERING SEQUENCE and either changing the format of the original so that I get [001], or changing the new one so that I get [00010]. I'm not sure whether Word alternates between the two, or picks one randomly, or takes direction from the evil central corporate server at Microsoft HQ that attempts to destroy the minds of all who use Microsoft software so that they are unable to formulate rational thought any longer (e.g., "screw this, I'm switching to Open Office, it's free and it doesn't have ridiculous numbers of stupid bugs like this in it").
Anyone have a fix? For the moment, I am stuck using Word due to other requirements like corporate inertia ("but we've always used Word, everybody uses Word, why don't you want to use Word, are you a communist?") and intransigence ("but we like paying money to Microsoft for products that barely work! and forced upgrades that we didn't need!"). Short of reducing Microsoft Corporate HQ to rubble and thereby eliminating the company's products from the face of the Earth, I don't believe I will be allowed to use Open Office, sadly.
Oh yeah, Microsoft's "help" system is useless as always. Apparently this problem doesn't exist. Webpages put up by well-meaning people who are likewise trapped are not sufficiently helpful to enable overcoming Microsoft's hardcoded features/bugs.