Latest questions about "the sims 3"

My question is: how can I create a particular object and put it in my game in order to use it?

I want to install The Sims 3 on my sister's computer, but I don't know how. I have read the explanations and I am getting nowhere. Can you help?

I can't update The Sims 3. It says that they couldn't connect to EA Games Download Manager. When I play The Sims 3, it crashes after a couple of minutes.

The Sims 3 is installing but I can't play it. Can you help?

After I cleaned my files, I reinstalled all Sims 3 games. Also, I reinstalled the Create a World Tool and when I try to use it, I receive an error saying: "Attempted to read or write protected memory.