Download, install and play the King Edition offered here walked or run on Win7 64-bit, Nvidia GTX 460, 12 MB RAM, i7 870 outstanding. Product keys are nat. included.
A suggestion: the product key information could still be provided with a distinctive note it (Addon / basic version); I had problems with it, however, is not.
For players who are still a problem with crashing games under the above or similar components have (message "your memory is used up"): it could help to enable not only the full memory in the system, but also at least 2 processor cores.