Here’s a chance to have your cake and eat it too. With the Windows 7 Upgrade Option, you can get a new PC or upgrade the one you have today, and get Windows 7 from participating retailers and hardware manufacturers when Windows 7 arrives.
How to buy: For more details and a list of participating UK retailers, go to http://www.microsoft.com/uk/windows/buy/offers/upgrade.aspx
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Source: Microsoft Small Business