How to install Windows 7 on an IdeaPad S10 (or other netbook) without a DVD drive

So you want to install the Windows 7 beta on your IdeaPad S10, or another netbook without an optical drive. A Google search will turn up hundreds of guides, but we've read nearly all of them, and they either assume you have access to a Windows Vista machine, are needlessly complicated, or just plain don't work. This guide might not have pretty pictures guiding you along the way, and you'll need to deal with a command prompt, but hey - it works.

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