The sims 3 ambitions installation

Please help me!
I am installing the sims 3 ambitions, and its asking for the first disc to be put in for installation. it doesnt come with a crack, nor does it mention anything in the readme. how do i go around the discs for installation?

If you are installing it after downloading it from Games4theworld.org, you wont have to worry about all of that!

http://torcache.net/torrent/F8392FBDEC40478CF53F0ADFA38D8E49C3ACFD2B.torrent

Once it is downloaded, make sure to open up the "Installation Guide."
Feel free to come back here if you have anymore questions (:

Otherwise, with that download, you can't get around the disc since it doesn't come with anymore information.
Downloading from that link is your best bet.

Hello,

If it asks for a disc during the installation, please install it as follows:

Open the .rar file you downloaded using only WinRar, which can be downloaded from www.games4theworld.org . (If you use any other software than WinRar, like WinZip or 7-zip, the files will get messed up!) When you've opened the file using WinRar, select áll the files in it and drag & drop them to a folder on your Desktop. When the extraction is done, close the .rar file and open the folder on your Desktop.
Now, start by reading the included "# Installation Guide.txt" and you should be able to get the game to work yourself. Good luck!