Aquí les dejo el link a Chew7, un completo programa para hacer todos los parches necesarios para remover el paquete KB971033, que introduce el WTA, y hace que el sistema vuelva a estar activado.
Testeado y libre de virus:
http://www.virustotal.com/file-scan/report.html?id=5d782ea9e0f56d17b39e996bfe56c6afd132e9e592b61a795cdd2d2b66574ae6-1281796296
http://virusscan.jotti.org/es/scanresult/0f04a4eebc87d66f2e3dbf4474a18f60a1903c49/9b851249fca495d2df273ff0787bce8d129549bf
http://www.garyshood.com/virus/results.php?r=f5bdaee17dc7c1c254208a4451290842
Compatible para:
* Windows 7 Starter
* Windows 7 Home Basic
* Windows 7 Home Premium
* Windows 7 Professional
* Windows 7 Enterprise
* Windows 7 Ultimate
* Windows N Premium
* Windows N Professional
* Windows N Enterprise
* Windows N Ultimate
* Windows Server 2008 R2 Foundation
* Windows Server 2008 R2 Standard
* Windows Server 2008 R2 Enterprise
* Windows Server 2008 R2 Datacenter
* Windows Web Server 2008 R2
* Windows HPC Server 2008
* Windows Server 2008 R2 for Itanium-Based Systems
* Windows Home Server V2 (codename: Vail)
Bajar de:
http://dl.dropbox.com/u/3085356/Chew7%20v1.1.rar
http://www.datafilehost.com/download-81c7af52.html
http://www.maishare.com/files/0QCVGYUZ/
http://www.demonoid.com/files/details/2334767/11620854/