How do i uninstall custom things from my sims2 game?

Like a few days ago i downloaded the inteenimator on my sims2 game which makes the teens be able to woo hoo and get pregnant like the adults. and looks as i downloaded the wrong files and it messed my whole game up! i deleted it out of my sims2 files but its still messed up! can someone please tell me how to fix this?? soon haha cause i want to play it asap!