At first I downloaded a new residential lot. I created a family and I wanted to move them in but the house costed too much. So like the Sims 2.. o.O... I did the Family funds cheat while they were in the bin. They never recieved the money. ><
Now, I guess in the Sims 3, You have to move them into a low priced residential lot. Type the familyfunds cheat, then evict them, then move them somewhere else.