How Do I Use the Upgrade Version on My Windows 7 RC?

nonxcarbonx

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Jun 6, 2009
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I'm running the windows 7 x64 Release Candidate edition on my computer, and it is the only OS that has ever been on here. I ordered the upgrade version, but I'm afraid to open it because it might not work (I can't get a definite answer). Can someone please explain what I should do? If it helps, I'd rather do a clean installation but I don't mind an upgrade either.