Product Key for windows 8 release preview not working
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I created a virtual machine (using VirtualBox) with settings of 40GB disk space and 3MB memory.  I started the installation of Windows 8 Release Preview.  One of the first items the installation now request for is the product key.  When I entered the product key, Windows 8 could not verify it; I cannot continue on with the installation.

Any advice would be helpful.