Windows 7 beta howto - download, activate and dual-boot

Following steps：

1. Download the Windows 7 Beta ISO (warning: big 2 gig file): 32-bit Version or 64-bit Version.
2. Get the activation key using Neowin's tip.
   
   1. Visit TechNet Downloads, sign in at the top right and let the page load.
   2. Within the same window copy and paste "https://www.microsoft.com/betaexperience/scripts/gcs.aspx?Product=tn-win7-32-ww&LCID=1033".
3. Set up dual-boot with Adam's instructions.
   
   1. Download the Windows 7 Beta and Burn It to a DVD.
   2. Partition Your Hard Drive.
   3. Install Windows 7.