got Civ IV the other day been playing it for a few days. went to see if there was a update on there was. downloaded the 1.74 patch i think it was then went to install it and it froze up. so i just shut the computer down for the night. was looking at other forums about manually deleting the files tried that and it didnt work. now when i put the disk in and the screen that has comes up first where it says play, i click on that and it does nothing the screen just disappears and im left sitting at the desktop. any ideas?????????????????????