This is a pack intended for modders to modify their game. The inside readme includes more information. The password is "eutopia" - x4.dll : the dll with some 3.55 modifications and my own. This may be detected as a virus by some antivirus programs, since this is an .exe "hack". You should set the antivirus to ignore this and ignore its signature, since the mod won't run without the DLL and the detection is a false positive. Forum link in description, help wanted.