hello i've got a little problem....i have instaled The Sims 2 (original) and now i'm trying to install the expansion packs (not original). the instalation runs perfectly until they ask me about cd4 of The Sims 2 for an update check.....I insert the cd and press ok but then a message appears saying that the update check wasn't successful...i press ok and the game starts uninstaling. please i need help...i can't update my sims 2 and without the update i can't enjoy the game (i already tried the patch...didn't work) . what should I do to install the game? please... help me