sorry to hear you're having issues, are you using the built in zip manager to extract the files?
also try turning off your antivirus when you do, then add an exception for the folder you've extracted them to and make sure you're firewall isn't blocking the game (try adding an exception for that too)
Finally got back online, but now my membership medallion has run out... Can I be backdated for this as its not my fault I couldn't play? :(