1. Upgrade Windows Vista SP1 to Windows7 Beta
2. Install a fresh copy of Windows7
But I could not find a extra computer with the given specification and I did not want to install it in my current computer as this is a beta version and it might not work as I want. So I decide to install it on virtual machine.
Virtual Machine Setup
455 RAM (1 GB is recommended)
16GB Hard
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After starting the New virtual Machine selected the downloaded ISO image straight away.
Click CD > Select Capture ISO Image > Select the downloaded ISO image from Microsoft Site
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You do not have to burn it to a DVD using a ISO image burner. That's one of the easy thing I found in the installation process.
Rest went as normal installation and took sometimes beyond whats expected as I did not allocate much RAM. Windows7 performances was pretty good in less RAM. Will update as we experience more Windows7 hacks tricks.