How to earn money by hacking in The Sims 3

Select the Sim who wants to hack by clicking his portrait near the left side of the screen. Only Sims who have the 'computer whiz' trait can hack on a computer. You must either assign this trait to a Sim at creation, on his earlier birthdays, or change his traits using the 'Mid-life crisis' lifetime reward.
Go to 'buy mode' by clicking the button near the bottom left of the screen that pictures a chair and a lamp.
Change the sort mode by clicking the middle, three dimensional image of a chair and lamp. I have denoted which image to press with a red arrow in the picture at left.
Click on the box that has a picture of a remote control inside, which will take you to the 'electronics' category.
Click the second tab to the left, the one with a picture of a computer monitor and tower on it, to enter the 'computers' category. Buy whichever computer you want or you can afford, and place it in your Sim's home (on a desk or dining table) or in his personal inventory.
Wait until the game clock shows that it's after 9:00PM. Sims can only hack at night.
With your computer whiz Sim selected, left click on the computer and select the 'Hack' option from the pie menu.
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