I have a Dell Studio 15 Laptop…

Processer: Intel Core Duo T6600
Operating System: Genuine Windows Vista Bussniess Addition
Office Software: Microsoft Works 9
HD Display: 15.6" High Definition
Memory: 4GB Shared Dual Channel DRR2 at 800MHz
Hard Drive: Size: 320GB SATA Hard Drive
Video Card: Intel Graphics Media Accelerator 4500MHD
Yes. The Sims 3 will work on your laptop.
You should be able to run it at somewhere between medium and high settings.
Video Card: Intel Graphics Media Accelerator 4500MHD isnt a gaming video card
yes maybe not at high setting but it will work.