Originally Posted by skwasjer

You can install it to Program Files, but it is not recommended due to similar security restrictions as Vista. Windows 7 is a little less strict as Vista (f.ex. UAC) but has the same features that prevent overwriting key system/program files. Thus, when installing mods (JSGME) and using mod tools (like S3D) you will have similar problems... (the need to run 'elevated'). To circumvent that, installation outside of ProgFiles is absolutely a must. Vanilla it works perfectly fine though in ProgFiles...