I have Windows 7 Home Premium, and recently attempted to install Civ IV (without expansions). The installation seemed to work fine, but as soon as I try to run the game a Windows dialog box popped up to tell me that there were "known compatibility issues" between Windows 7 and the game. I tried running it, but another Windows popup apppeared immediately telling me that "Sid Meier's Civilization 4 has stopped working" and closing it. This happens every time I try to run the game, and not being that brilliant with computers I have no idea what to do. Help?