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#11
[QUOTE=Dave76;278266
Unless MS has changed the policy, The Win7 upgrade purchase is only valid for an equivalent level of Vista. See the "What are the "equivalent" Windows 7 products for Windows Vista?" below.
If I understand this correctly, you can't buy Win7 Home Premium upgrade and install it on Vista Basic.[/QUOTE]
I think you're confusing the free upgrade program for machines purchased with Vista, and the retail upgrade.
The free upgrade is to an equivalent Win7 version. I believe that it's not permiited to cross from 32 to 64 bit or the reverse direction.
The retail upgrade package includes both 32 and 64 bit versions. The options for an upgrade-in-place are limited, but most Win7 versions ought to be available for custom install.