Info on Upgrading from Vista to Win7
More of an overview than a detailed how-to, Walter Mossberg does cover the several nuances of upgrading your Vista system to Windows7. The most notable item is that you cannot upgrade from a 32-bit to a 64-bit version of the operating system during an upgrade. In my experience on my laptop, the Windows7 "upgrade" took several hours to transfer and keep the data–versus a clean installation on my desktop which took less than 30 minutes. And of course, don’t forget to apply the Concurrent Sessions tip if you were using that on Vista, as it will be locked down again upon upgrading.