Around July 6 there was at least one thread that mentioned when trying to order windows 7 upgrade for Pavilion Elite e9150t (product NY810AV) with Vista Business factory installed, the only current operating system in the dropdown is Vista Home Premium. This upgrades to a lower level of Windows 7 than Vista Business.
This was reported fixed at that time, but is apparently broken again.
Is there any kind soul out there who can fix it again? I called the customer support number and got the usual runaround. (Updating now, try later. When I didn't buy that, they they would escalate to HP and send me an email in 1 day - didn't happen).