Well, i've heard that you can't run The Sims 2 using just normal DirectX 9.00. You'll have to upgrade your version to DirectX 9.00c. Also, you'll need a good, modern graphics card to run the game properly. Cheap onboard graphics won't do. If it doesn't meet the minimum system requirements, you'll either have to upgrade or buy a computer.
Anyway, good luck with your game!