if you're asking for yourself, I'd suggest you repost your question to the 'Q&A' page.
If you're asking for tigerjm's benefit, the question was posted over four years ago. If he / she doesn't have an answer by now, it's moot.
Not to mention that it's not worth doing this with SP2 since SP3 has been available for years; or that anyone with an enterprise license can download XP with SP3 already included.
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