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 partition (May work on Dell PC's)
Should work on all languages (Tested on simplified Chinese)
Should work with hidden partitions
Works on Windows 7 Ultimate and Professional editions
Support for bios modded users
Can activate Windows Vista SP2
Improves Windows 7 boot time on a Mac (Compared to other loaders)

Latest - 1.7.3

* Improved free drive letter assignment
* Corrected some grammar
* Added random SLIC encryption support, this means everyones SLIC will have a unique encryption
* Added GRLDR file size randomization
* Added GRLDR v0.97-DAZ+SEC-R2. This is just a minor version to support the random encryption
* Added SLIC table detection (BIOS mod and software, it can tell the difference)
* Added support for Advent, Medion and Nokia
* Added various new OEM SLP serials

Download: