This is the most powerful and easy to use activator for all Windows 7 editions. All the tools needed are here

Windows 7 Enterprise is ultra edition of the Windows 7 operating system as it is the only edition of Windows 7 that is feature complete. All other editions lack features that are included in Windows 7 Enterprise.

Windows 7 with SP1 ALL EDITIONS with OEM logos and themes.
Installs themes of the manufacturer of the computer (If a brand is detected) (except for Enterprise Edition) and certificate and license code of the Brand (If SLIC is 2.1)
The language is English ONLY. Perfectly like an OEM installed OS.

aka "The 4 Horsemen of the Apocalypse Project"
We decided at W7V with Fibonacci and Secr9tos to create a $OEM$ folder that will install all necessary packs to get Windows Server 2008 R2 to a Workstation OS.
Till now the only way to do this was either to "sysprep" the release or use RT Server Customization Tool from Ben, involving lots of manipulations and maybe some errors if you are not acquainted with Windows Imaging and Deployment Techniques.
After lots of testing (almost 80 VM tests on all R2 Editions in 1 month) the $OEM$ Folder was ready.
I integrated "this folder" to all editions (Foundation, Standard, Enterprise, Datacenter and Web Server) in the same install.wim file