I can't Install Opposing Force because: "This program can not be installed onto the root directory of any drive. Please specify a different location." I click ok, and it appears again and again and I keep clicking ok like a f***ing idiot, and I'm so MAD!!!!! Its 7:02 AM and I haven't slept!!!! PLEASE, anyone, if anybody in here knows how to fix this please help, I'm going INSANE here!!!!!!