The links that say msft-dnl.digitalrivercontent are the same as when you buy online (at least when I bought my win 7 professional license for my desktop the iso linked is the same as the one I downloaded).
Those are probably the only ones I would trust, make sure you are indeed going to digitalrivercontent website, download appropriate language and version/arch (prof, home prem 64 or 32)
http://www.windowsvalley.com/unlock-all-editions-from-window...
To get all editions-
4. Just delete the file and finally create the bootable ISO and burn your unlocked disc.
In my case, I'm in the position of occasionally needing to support others who have e.g. Win 7 (most recently, actually, someone with Vista). Sometimes, it's simplest to simply back up their data and re-install. But I may need to supply an installation disk; even if they have one, part of the solution may be installing from a disk minus all the crapware.
I don't do this work regularly, so I'm not part of a community that's constantly, physically swapping disks and utilities and whatnot.
http://answers.microsoft.com/en-us/windows/forum/windows_7-w...