lots more info needed here. gonna have to include details about what you are trying to install, where you go it, how you're trying to install it and anything else that would be useful for us to try and help out.
RE: The Sims 3 I don't have an (F dri\ve to save it to so i downloaded it normal... and it installed with the reg. code but after installed ready to play, and it keep saying re-enter registration code... I looked through local machine ea ecrg and entered that code and it didn't work... Please help