Win7 activation toolkit. Just get yourself Windows 7 releases from GRP or WZT, choose one of the activation methods and you're good to go. Read instructions first.

Features:
Input any Ultimate or Professional key (comes with 4 preset keys, I will add more for other versions when they are released)
Automatically finds an available drive letter (if required)

Installer and uninstaller built in as standard
Checks your Windows 7 version and build before install
Automatically finds your active boot part...