I just purchased a copy of Doom 3 off of Steam in order to play TDM. But unfortunately, it doesn't seem to be working. I placed the updater in the correct folder (C:\Program Files\Steam\steamapps\common\doom 3) and let it download what it wanted. But when I click on tdmlauncher, all I get is Doom 3. I followed all the instructions to the letter, and consulted the FAQ, how can I fix this problem? I'm currently using Windows 7 RC.