Solved
I got a new computer, but it has no CD drive.
I just had to replace my computer with a warranty, but my exact model was not available since it's no longer in production. It took me a while to realize that my replacement has no CD drive so I can'...
You can download the game throught the Origin Client which you can download here: http://origin.com/download. Log in the client, if you've registered the games at thesims3.com, the games should already be availble for download.
If you didn't, you should be able to redeem the codes.
