because it says: "Disc Authentication failure.No disc found."or something like that. then, it adds "please put in the sims 3:movie stuff disc to continue". I already have the Movie stuff in my computer's dvd player but it won't play it. I bought the movie stuff disc at walmart and everything so it should be a legal copy. What is going on with my computer? What should I do? I just want to play my sims 3 game.

Just a suggestion...

nraas NoCD:

https://nraas.wikispaces.com/NoCD

thank you for the suggestion, crv13 but do I have to download something? i don't know how to download anything, because it is my first time on the nraas website, so i am feeling a little overwhelmed. i have the correct disc though. I clicked on the no cd mod and nothing happened.

Do you know how to install .package mods? To download that mod, click the link, then click Base-Mod. It'll start a download, and you can install it from there. If you've never installed a .package file (or any mod or custom content) don't worry, this site has an amazing guide. Read it through a few times and follow the instructions step-by-step, and you'll be in business. If you're confused about NRaas mods in specific, ask on that site. Click 'chatterbox English' in the sidebar and go from there.

thank you for the information. no i dont know how to install .package mods

if you are completely new to installing mods you should read the CC Basics first. it guides you through the "must-knows" of sims 3 before you start grabbing "must-haves"..